13920824 has 16 divisors (see below), whose sum is σ = 27637200. Its totient is φ = 6550912.

The previous prime is 13920811. The next prime is 13920833. The reversal of 13920824 is 42802931.

It is a congruent number.

It is an unprimeable number.

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, 51044 + ... + 51315.

It is an arithmetic number, because the mean of its divisors is an integer number (1727325).

Almost surely, 2^13920824 is an apocalyptic number.

It is an amenable number.

13920824 is a deficient number, since it is larger than the sum of its proper divisors (13716376).

13920824 is a wasteful number, since it uses less digits than its factorization.

13920824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102382 (or 102378 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 13920824 is about 3731.0620471925. The cubic root of 13920824 is about 240.5590209613.

The spelling of 13920824 in words is "thirteen million, nine hundred twenty thousand, eight hundred twenty-four".