13535972 has 12 divisors (see below), whose sum is σ = 23973936. Its totient is φ = 6686280.

The previous prime is 13535903. The next prime is 13535981. The reversal of 13535972 is 27953531.

It is a happy number.

13535972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 20054 + ... + 20717.

It is an arithmetic number, because the mean of its divisors is an integer number (1997828).

Almost surely, 2^13535972 is an apocalyptic number.

It is an amenable number.

13535972 is a deficient number, since it is larger than the sum of its proper divisors (10437964).

13535972 is a wasteful number, since it uses less digits than its factorization.

13535972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40858 (or 40856 counting only the distinct ones).

The product of its digits is 28350, while the sum is 35.

The square root of 13535972 is about 3679.1265267724. The cubic root of 13535972 is about 238.3214590832.

The spelling of 13535972 in words is "thirteen million, five hundred thirty-five thousand, nine hundred seventy-two".