10638988 has 12 divisors (see below), whose sum is σ = 18659592. Its totient is φ = 5307680.

The previous prime is 10638977. The next prime is 10638989. The reversal of 10638988 is 88983601.

It is a happy number.

It is a super-2 number, since 2×10638988² = 226376131328288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10638989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 745 + ... + 4672.

It is an arithmetic number, because the mean of its divisors is an integer number (1554966).

Almost surely, 2^10638988 is an apocalyptic number.

It is an amenable number.

10638988 is a deficient number, since it is larger than the sum of its proper divisors (8020604).

10638988 is a wasteful number, since it uses less digits than its factorization.

10638988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5912 (or 5910 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 10638988 is about 3261.7461581184. The cubic root of 10638988 is about 219.9379163660.

The spelling of 10638988 in words is "ten million, six hundred thirty-eight thousand, nine hundred eighty-eight".