13993624 has 16 divisors (see below), whose sum is σ = 26392320. Its totient is φ = 6955680.

The previous prime is 13993621. The next prime is 13993691. The reversal of 13993624 is 42639931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13993621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3672 + ... + 6439.

It is an arithmetic number, because the mean of its divisors is an integer number (1649520).

Almost surely, 2^13993624 is an apocalyptic number.

It is an amenable number.

13993624 is a deficient number, since it is larger than the sum of its proper divisors (12398696).

13993624 is a wasteful number, since it uses less digits than its factorization.

13993624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10290 (or 10286 counting only the distinct ones).

The product of its digits is 34992, while the sum is 37.

The square root of 13993624 is about 3740.8052609031. The cubic root of 13993624 is about 240.9776326067.

The spelling of 13993624 in words is "thirteen million, nine hundred ninety-three thousand, six hundred twenty-four".