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227940480 = 273454397
BaseRepresentation
bin11011001011000…
…01100010000000
3120212220120120000
431211201202000
5431323043410
634341320000
75435314335
oct1545414200
9525816500
10227940480
11107737069
1264406000
13382baa31
14223b698c
1515027dc0
hexd961880

227940480 has 160 divisors (see below), whose sum is σ = 814201740. Its totient is φ = 60770304.

The previous prime is 227940467. The next prime is 227940487. The reversal of 227940480 is 84049722.

It can be written as a sum of positive squares in 2 ways, for example, as 226442304 + 1498176 = 15048^2 + 1224^2 .

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (227940487) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 49642 + ... + 54038.

Almost surely, 2227940480 is an apocalyptic number.

227940480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 227940480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407100870).

227940480 is an abundant number, since it is smaller than the sum of its proper divisors (586261260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

227940480 is an equidigital number, since it uses as much as digits as its factorization.

227940480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4428 (or 4407 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 227940480 is about 15097.6978377500. The cubic root of 227940480 is about 610.8583097864.

The spelling of 227940480 in words is "two hundred twenty-seven million, nine hundred forty thousand, four hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 72 80 81 90 96 108 120 128 135 144 160 162 180 192 216 240 270 288 320 324 360 384 405 432 480 540 576 640 648 720 810 864 960 1080 1152 1296 1440 1620 1728 1920 2160 2592 2880 3240 3456 4320 4397 5184 5760 6480 8640 8794 10368 12960 13191 17280 17588 21985 25920 26382 35176 39573 43970 51840 52764 65955 70352 79146 87940 105528 118719 131910 140704 158292 175880 197865 211056 237438 263820 281408 316584 351760 356157 395730 422112 474876 527640 562816 593595 633168 703520 712314 791460 844224 949752 1055280 1187190 1266336 1407040 1424628 1582920 1688448 1780785 1899504 2110560 2374380 2532672 2814080 2849256 3165840 3561570 3799008 4221120 4748760 5065344 5698512 6331680 7123140 7598016 8442240 9497520 11397024 12663360 14246280 15196032 18995040 22794048 25326720 28492560 37990080 45588096 56985120 75980160 113970240 227940480