13897736 has 16 divisors (see below), whose sum is σ = 26117100. Its totient is φ = 6933184.

The previous prime is 13897717. The next prime is 13897777. The reversal of 13897736 is 63779831.

It can be written as a sum of positive squares in 2 ways, for example, as 11356900 + 2540836 = 3370^2 + 1594^2 .

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, 2366 + ... + 5778.

Almost surely, 2^13897736 is an apocalyptic number.

It is an amenable number.

13897736 is a deficient number, since it is larger than the sum of its proper divisors (12219364).

13897736 is a wasteful number, since it uses less digits than its factorization.

13897736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3928 (or 3924 counting only the distinct ones).

The product of its digits is 190512, while the sum is 44.

The square root of 13897736 is about 3727.9667380490. The cubic root of 13897736 is about 240.4259565201.

The spelling of 13897736 in words is "thirteen million, eight hundred ninety-seven thousand, seven hundred thirty-six".