10656840 has 32 divisors (see below), whose sum is σ = 31970880. Its totient is φ = 2841792.

The previous prime is 10656829. The next prime is 10656857. The reversal of 10656840 is 4865601.

It is a super-2 number, since 2×10656840² = 227136477571200, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 10656798 and 10656807.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44284 + ... + 44523.

It is an arithmetic number, because the mean of its divisors is an integer number (999090).

Almost surely, 2^10656840 is an apocalyptic number.

10656840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10656840 is an abundant number, since it is smaller than the sum of its proper divisors (21314040).

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

10656840 is a wasteful number, since it uses less digits than its factorization.

10656840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88821 (or 88817 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 10656840 is about 3264.4815821199. The cubic root of 10656840 is about 220.0608647025.

The spelling of 10656840 in words is "ten million, six hundred fifty-six thousand, eight hundred forty".