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12564480 = 21135409
BaseRepresentation
bin101111111011…
…100000000000
3212122100020010
4233323200000
511204030410
61125144520
7211540065
oct57734000
925570203
1012564480
117101975
12425b140
1327abc06
141950c6c
151182c20
hexbfb800

12564480 has 96 divisors (see below), whose sum is σ = 40294800. Its totient is φ = 3342336.

The previous prime is 12564467. The next prime is 12564481. The reversal of 12564480 is 8446521.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12564481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30516 + ... + 30924.

Almost surely, 212564480 is an apocalyptic number.

12564480 is a gapful number since it is divisible by the number (10) 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 12564480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20147400).

12564480 is an abundant number, since it is smaller than the sum of its proper divisors (27730320).

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

12564480 is an equidigital number, since it uses as much as digits as its factorization.

12564480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 12564480 is about 3544.6410255483. The cubic root of 12564480 is about 232.4778103462.

The spelling of 12564480 in words is "twelve million, five hundred sixty-four thousand, four hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 256 320 384 409 480 512 640 768 818 960 1024 1227 1280 1536 1636 1920 2045 2048 2454 2560 3072 3272 3840 4090 4908 5120 6135 6144 6544 7680 8180 9816 10240 12270 13088 15360 16360 19632 24540 26176 30720 32720 39264 49080 52352 65440 78528 98160 104704 130880 157056 196320 209408 261760 314112 392640 418816 523520 628224 785280 837632 1047040 1256448 1570560 2094080 2512896 3141120 4188160 6282240 12564480