13553920 has 36 divisors (see below), whose sum is σ = 32468940. Its totient is φ = 5421056.

The previous prime is 13553909. The next prime is 13553957. The reversal of 13553920 is 2935531.

It can be written as a sum of positive squares in 2 ways, for example, as 3211264 + 10342656 = 1792^2 + 3216^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4015 + ... + 6574.

It is an arithmetic number, because the mean of its divisors is an integer number (901915).

Almost surely, 2^13553920 is an apocalyptic number.

13553920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13553920 is an abundant number, since it is smaller than the sum of its proper divisors (18915020).

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

13553920 is an equidigital number, since it uses as much as digits as its factorization.

13553920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10610 (or 10596 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 13553920 is about 3681.5648846652. The cubic root of 13553920 is about 238.4267465450.

The spelling of 13553920 in words is "thirteen million, five hundred fifty-three thousand, nine hundred twenty".