13992864 has 24 divisors (see below), whose sum is σ = 36731520. Its totient is φ = 4664256.

The previous prime is 13992863. The next prime is 13992871. The reversal of 13992864 is 46829931.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (13992863) 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, 72784 + ... + 72975.

It is an arithmetic number, because the mean of its divisors is an integer number (1530480).

Almost surely, 2^13992864 is an apocalyptic number.

It is an amenable number.

13992864 is an abundant number, since it is smaller than the sum of its proper divisors (22738656).

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

13992864 is a wasteful number, since it uses less digits than its factorization.

13992864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145772 (or 145764 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 13992864 is about 3740.7036771174. The cubic root of 13992864 is about 240.9732699933.

The spelling of 13992864 in words is "thirteen million, nine hundred ninety-two thousand, eight hundred sixty-four".