12902656 has 36 divisors (see below), whose sum is σ = 27743212. Its totient is φ = 5953536.

The previous prime is 12902647. The next prime is 12902663. The reversal of 12902656 is 65620921.

It can be written as a sum of positive squares in 2 ways, for example, as 2560000 + 10342656 = 1600^2 + 3216^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1390 + ... + 5266.

Almost surely, 2^12902656 is an apocalyptic number.

12902656 is a gapful number since it is divisible by the number (16) 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 12902656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13871606).

12902656 is an abundant number, since it is smaller than the sum of its proper divisors (14840556).

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

12902656 is an equidigital number, since it uses as much as digits as its factorization.

12902656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906 (or 3892 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 12902656 is about 3592.0267259585. The cubic root of 12902656 is about 234.5451046242.

The spelling of 12902656 in words is "twelve million, nine hundred two thousand, six hundred fifty-six".