13630988 has 12 divisors (see below), whose sum is σ = 27262032. Its totient is φ = 5841840.

The previous prime is 13630937. The next prime is 13630997. The reversal of 13630988 is 88903631.

13630988 is an admirable number.

It is a super-2 number, since 2×13630988² = 371607667712288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 2.

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, 243383 + ... + 243438.

It is an arithmetic number, because the mean of its divisors is an integer number (2271836).

Almost surely, 2^13630988 is an apocalyptic number.

It is an amenable number.

13630988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13630988 is a wasteful number, since it uses less digits than its factorization.

13630988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486832 (or 486830 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 13630988 is about 3692.0167930279. The cubic root of 13630988 is about 238.8777933031.

The spelling of 13630988 in words is "thirteen million, six hundred thirty thousand, nine hundred eighty-eight".