13897236 has 24 divisors (see below), whose sum is σ = 33040224. Its totient is φ = 4544800.

The previous prime is 13897223. The next prime is 13897241. The reversal of 13897236 is 63279831.

It is a junction number, because it is equal to n+sod(n) for n = 13897194 and 13897203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10290 + ... + 11561.

It is an arithmetic number, because the mean of its divisors is an integer number (1376676).

Almost surely, 2^13897236 is an apocalyptic number.

It is an amenable number.

13897236 is an abundant number, since it is smaller than the sum of its proper divisors (19142988).

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

13897236 is a wasteful number, since it uses less digits than its factorization.

13897236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21911 (or 21909 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 13897236 is about 3727.8996767617. The cubic root of 13897236 is about 240.4230732106.

It can be divided in two parts, 1389723 and 6, that multiplied together give a palindrome (8338338).

The spelling of 13897236 in words is "thirteen million, eight hundred ninety-seven thousand, two hundred thirty-six".