10885640 has 16 divisors (see below), whose sum is σ = 24492780. Its totient is φ = 4354240.

The previous prime is 10885621. The next prime is 10885657. The reversal of 10885640 is 4658801.

It can be written as a sum of positive squares in 2 ways, for example, as 10876804 + 8836 = 3298^2 + 94^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10885597 and 10885606.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136031 + ... + 136110.

Almost surely, 2^10885640 is an apocalyptic number.

10885640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10885640 is an abundant number, since it is smaller than the sum of its proper divisors (13607140).

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

10885640 is a wasteful number, since it uses less digits than its factorization.

10885640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272152 (or 272148 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 10885640 is about 3299.3393278049. The cubic root of 10885640 is about 221.6246124704.

The spelling of 10885640 in words is "ten million, eight hundred eighty-five thousand, six hundred forty".