13537972 has 12 divisors (see below), whose sum is σ = 27076000. Its totient is φ = 5801976.

The previous prime is 13537957. The next prime is 13537973. The reversal of 13537972 is 27973531.

13537972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

13537972 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13537973) 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, 241722 + ... + 241777.

Almost surely, 2^13537972 is an apocalyptic number.

It is an amenable number.

13537972 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.

13537972 is a wasteful number, since it uses less digits than its factorization.

13537972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483510 (or 483508 counting only the distinct ones).

The product of its digits is 39690, while the sum is 37.

The square root of 13537972 is about 3679.3983203779. The cubic root of 13537972 is about 238.3331961899. Note that the first 3 decimals are identical.

The spelling of 13537972 in words is "thirteen million, five hundred thirty-seven thousand, nine hundred seventy-two".