13889256 has 16 divisors (see below), whose sum is σ = 34723200. Its totient is φ = 4629744.

The previous prime is 13889237. The next prime is 13889257. The reversal of 13889256 is 65298831.

It is a super-2 number, since 2×13889256² = 385822864467072, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13889257) 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, 289336 + ... + 289383.

It is an arithmetic number, because the mean of its divisors is an integer number (2170200).

Almost surely, 2^13889256 is an apocalyptic number.

It is an amenable number.

13889256 is an abundant number, since it is smaller than the sum of its proper divisors (20833944).

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

13889256 is a wasteful number, since it uses less digits than its factorization.

13889256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578728 (or 578724 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 13889256 is about 3726.8292152982. The cubic root of 13889256 is about 240.3770462293.

The spelling of 13889256 in words is "thirteen million, eight hundred eighty-nine thousand, two hundred fifty-six".