13197736 has 16 divisors (see below), whose sum is σ = 25349940. Its totient is φ = 6437760.

The previous prime is 13197733. The next prime is 13197739. The reversal of 13197736 is 63779131.

It is an interprime number because it is at equal distance from previous prime (13197733) and next prime (13197739).

It can be written as a sum of positive squares in 2 ways, for example, as 12916836 + 280900 = 3594^2 + 530^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13197695 and 13197704.

It is not an unprimeable number, because it can be changed into a prime (13197731) 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, 19791 + ... + 20446.

Almost surely, 2^13197736 is an apocalyptic number.

It is an amenable number.

13197736 is a deficient number, since it is larger than the sum of its proper divisors (12152204).

13197736 is a wasteful number, since it uses less digits than its factorization.

13197736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40284 (or 40280 counting only the distinct ones).

The product of its digits is 23814, while the sum is 37.

The square root of 13197736 is about 3632.8688388105. The cubic root of 13197736 is about 236.3196377489.

The spelling of 13197736 in words is "thirteen million, one hundred ninety-seven thousand, seven hundred thirty-six".