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12878768 = 247216427
BaseRepresentation
bin110001001000…
…001110110000
3220020022100102
4301020032300
511244110033
61140011532
7214316300
oct61101660
926208312
1012878768
1172a7011
124390ba8
13288bc96
1419d3600
1511e5de8
hexc483b0

12878768 has 30 divisors (see below), whose sum is σ = 29028276. Its totient is φ = 5519136.

The previous prime is 12878753. The next prime is 12878771. The reversal of 12878768 is 86787821.

It is a happy number.

It is a super-3 number, since 3×128787683 (a number of 22 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7430 + ... + 8997.

Almost surely, 212878768 is an apocalyptic number.

It is an amenable number.

12878768 is an abundant number, since it is smaller than the sum of its proper divisors (16149508).

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

12878768 is a wasteful number, since it uses less digits than its factorization.

12878768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16449 (or 16436 counting only the distinct ones).

The product of its digits is 301056, while the sum is 47.

The square root of 12878768 is about 3588.7000431911. The cubic root of 12878768 is about 234.4002694651.

The spelling of 12878768 in words is "twelve million, eight hundred seventy-eight thousand, seven hundred sixty-eight".

Divisors: 1 2 4 7 8 14 16 28 49 56 98 112 196 392 784 16427 32854 65708 114989 131416 229978 262832 459956 804923 919912 1609846 1839824 3219692 6439384 12878768