13213736 has 16 divisors (see below), whose sum is σ = 25445940. Its totient is φ = 6428160.

The previous prime is 13213703. The next prime is 13213747. The reversal of 13213736 is 63731231.

It can be written as a sum of positive squares in 2 ways, for example, as 11600836 + 1612900 = 3406^2 + 1270^2 .

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, 22025 + ... + 22616.

Almost surely, 2^13213736 is an apocalyptic number.

It is an amenable number.

13213736 is a deficient number, since it is larger than the sum of its proper divisors (12232204).

13213736 is a wasteful number, since it uses less digits than its factorization.

13213736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44684 (or 44680 counting only the distinct ones).

The product of its digits is 2268, while the sum is 26.

The square root of 13213736 is about 3635.0702881788. The cubic root of 13213736 is about 236.4150982443.

Adding to 13213736 its reverse (63731231), we get a palindrome (76944967).

The spelling of 13213736 in words is "thirteen million, two hundred thirteen thousand, seven hundred thirty-six".