102990632 has 16 divisors (see below), whose sum is σ = 193370100. Its totient is φ = 51425280.

The previous prime is 102990557. The next prime is 102990637. The reversal of 102990632 is 236099201.

It can be written as a sum of positive squares in 2 ways, for example, as 96157636 + 6832996 = 9806^2 + 2614^2 .

It is not an unprimeable number, because it can be changed into a prime (102990637) 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, 2219 + ... + 14522.

Almost surely, 2^102990632 is an apocalyptic number.

It is an amenable number.

102990632 is a deficient number, since it is larger than the sum of its proper divisors (90379468).

102990632 is a wasteful number, since it uses less digits than its factorization.

102990632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17516 (or 17512 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 102990632 is about 10148.4300263637. The cubic root of 102990632 is about 468.7406030235.

The spelling of 102990632 in words is "one hundred two million, nine hundred ninety thousand, six hundred thirty-two".