13437920 has 24 divisors (see below), whose sum is σ = 31747464. Its totient is φ = 5375104.

The previous prime is 13437917. The next prime is 13437929. The reversal of 13437920 is 2973431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13437929) 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, 41834 + ... + 42153.

It is an arithmetic number, because the mean of its divisors is an integer number (1322811).

Almost surely, 2^13437920 is an apocalyptic number.

13437920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13437920 is an abundant number, since it is smaller than the sum of its proper divisors (18309544).

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

13437920 is an equidigital number, since it uses as much as digits as its factorization.

13437920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84002 (or 83994 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 13437920 is about 3665.7768617307. The cubic root of 13437920 is about 237.7446122420.

The spelling of 13437920 in words is "thirteen million, four hundred thirty-seven thousand, nine hundred twenty".