13397436 has 36 divisors (see below), whose sum is σ = 36472072. Its totient is φ = 4122144.

The previous prime is 13397407. The next prime is 13397443. The reversal of 13397436 is 63479331.

13397436 is a `hidden beast` number, since 133 + 97 + 436 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 13397436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13846 + ... + 14781.

Almost surely, 2^13397436 is an apocalyptic number.

It is an amenable number.

13397436 is an abundant number, since it is smaller than the sum of its proper divisors (23074636).

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

13397436 is a wasteful number, since it uses less digits than its factorization.

13397436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28650 (or 28645 counting only the distinct ones).

The product of its digits is 40824, while the sum is 36.

The square root of 13397436 is about 3660.2508110784. The cubic root of 13397436 is about 237.5056235049.

The spelling of 13397436 in words is "thirteen million, three hundred ninety-seven thousand, four hundred thirty-six".