13881912 has 32 divisors (see below), whose sum is σ = 37860480. Its totient is φ = 4206560.

The previous prime is 13881871. The next prime is 13881943. The reversal of 13881912 is 21918831.

13881912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 26028 + ... + 26555.

It is an arithmetic number, because the mean of its divisors is an integer number (1183140).

Almost surely, 2^13881912 is an apocalyptic number.

13881912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13881912 is an abundant number, since it is smaller than the sum of its proper divisors (23978568).

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

13881912 is a wasteful number, since it uses less digits than its factorization.

13881912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52603 (or 52599 counting only the distinct ones).

The product of its digits is 3456, while the sum is 33.

The square root of 13881912 is about 3725.8437970479. The cubic root of 13881912 is about 240.3346719831.

It can be divided in two parts, 138819 and 12, that added together give a palindrome (138831).

The spelling of 13881912 in words is "thirteen million, eight hundred eighty-one thousand, nine hundred twelve".