13891936 has 24 divisors (see below), whose sum is σ = 27869184. Its totient is φ = 6814080.

The previous prime is 13891903. The next prime is 13891949. The reversal of 13891936 is 63919831.

13891936 = 213² + 214² + ... + 371².

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2400 + ... + 5791.

It is an arithmetic number, because the mean of its divisors is an integer number (1161216).

Almost surely, 2^13891936 is an apocalyptic number.

13891936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13891936 is an abundant number, since it is smaller than the sum of its proper divisors (13977248).

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

13891936 is an equidigital number, since it uses as much as digits as its factorization.

13891936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8254 (or 8246 counting only the distinct ones).

The product of its digits is 34992, while the sum is 40.

The square root of 13891936 is about 3727.1887529343. The cubic root of 13891936 is about 240.3925058779.

The spelling of 13891936 in words is "thirteen million, eight hundred ninety-one thousand, nine hundred thirty-six".