13530972 has 48 divisors (see below), whose sum is σ = 38861312. Its totient is φ = 3568320.

The previous prime is 13530941. The next prime is 13530989. The reversal of 13530972 is 27903531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5104 + ... + 7287.

Almost surely, 2^13530972 is an apocalyptic number.

13530972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13530972 is an abundant number, since it is smaller than the sum of its proper divisors (25330340).

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

13530972 is a wasteful number, since it uses less digits than its factorization.

13530972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12418 (or 12416 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 13530972 is about 3678.4469548982. The cubic root of 13530972 is about 238.2921112573.

The spelling of 13530972 in words is "thirteen million, five hundred thirty thousand, nine hundred seventy-two".