10638636 has 24 divisors (see below), whose sum is σ = 24878784. Its totient is φ = 3538320.

The previous prime is 10638631. The next prime is 10638697. The reversal of 10638636 is 63683601.

It is a super-2 number, since 2×10638636² = 226361151880992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10638597 and 10638606.

It is not an unprimeable number, because it can be changed into a prime (10638631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7651 + ... + 8933.

It is an arithmetic number, because the mean of its divisors is an integer number (1036616).

Almost surely, 2^10638636 is an apocalyptic number.

It is an amenable number.

10638636 is an abundant number, since it is smaller than the sum of its proper divisors (14240148).

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

10638636 is a wasteful number, since it uses less digits than its factorization.

10638636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981 (or 1979 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 10638636 is about 3261.6921988440. The cubic root of 10638636 is about 219.9354907281.

The spelling of 10638636 in words is "ten million, six hundred thirty-eight thousand, six hundred thirty-six".