13891304 has 24 divisors (see below), whose sum is σ = 30299490. Its totient is φ = 5953248.

The previous prime is 13891303. The next prime is 13891327. The reversal of 13891304 is 40319831.

It can be written as a sum of positive squares in only one way, i.e., 9060100 + 4831204 = 3010^2 + 2198^2 .

It is not an unprimeable number, because it can be changed into a prime (13891303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17327 + ... + 18110.

Almost surely, 2^13891304 is an apocalyptic number.

13891304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13891304 is an abundant number, since it is smaller than the sum of its proper divisors (16408186).

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

13891304 is a wasteful number, since it uses less digits than its factorization.

13891304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35457 (or 35446 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 13891304 is about 3727.1039695721. The cubic root of 13891304 is about 240.3888603489.

The spelling of 13891304 in words is "thirteen million, eight hundred ninety-one thousand, three hundred four".