13540972 has 24 divisors (see below), whose sum is σ = 24307920. Its totient is φ = 6598080.

The previous prime is 13540949. The next prime is 13540973. The reversal of 13540972 is 27904531.

It is not an unprimeable number, because it can be changed into a prime (13540973) 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, 42558 + ... + 42874.

It is an arithmetic number, because the mean of its divisors is an integer number (1012830).

Almost surely, 2^13540972 is an apocalyptic number.

It is an amenable number.

13540972 is a deficient number, since it is larger than the sum of its proper divisors (10766948).

13540972 is a wasteful number, since it uses less digits than its factorization.

13540972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 13540972 is about 3679.8059731459. The cubic root of 13540972 is about 238.3507996828.

The spelling of 13540972 in words is "thirteen million, five hundred forty thousand, nine hundred seventy-two".