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248995320 = 23357461643
BaseRepresentation
bin11101101011101…
…01110111111000
3122100112021100220
432311311313320
51002220322240
640412500040
76112265610
oct1665656770
9570467326
10248995320
11118607962
126b47a620
133c780312
14250d7a40
1516cd65d0
hexed75df8

248995320 has 128 divisors (see below), whose sum is σ = 856880640. Its totient is φ = 56701440.

The previous prime is 248995303. The next prime is 248995321. The reversal of 248995320 is 23599842.

248995320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248995321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 386919 + ... + 387561.

It is an arithmetic number, because the mean of its divisors is an integer number (6694380).

Almost surely, 2248995320 is an apocalyptic number.

248995320 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 248995320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428440320).

248995320 is an abundant number, since it is smaller than the sum of its proper divisors (607885320).

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

248995320 is a wasteful number, since it uses less digits than its factorization.

248995320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125 (or 1121 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 248995320 is about 15779.5855458881. The cubic root of 248995320 is about 629.1155136596.

The spelling of 248995320 in words is "two hundred forty-eight million, nine hundred ninety-five thousand, three hundred twenty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 35 40 42 56 60 70 84 105 120 140 168 210 280 420 461 643 840 922 1286 1383 1844 1929 2305 2572 2766 3215 3227 3688 3858 4501 4610 5144 5532 6430 6454 6915 7716 9002 9220 9645 9681 11064 12860 12908 13503 13830 15432 16135 18004 18440 19290 19362 22505 25720 25816 27006 27660 32270 36008 38580 38724 45010 48405 54012 55320 64540 67515 77160 77448 90020 96810 108024 129080 135030 180040 193620 270060 296423 387240 540120 592846 889269 1185692 1482115 1778538 2074961 2371384 2964230 3557076 4149922 4446345 5928460 6224883 7114152 8299844 8892690 10374805 11856920 12449766 16599688 17785380 20749610 24899532 31124415 35570760 41499220 49799064 62248830 82998440 124497660 248995320