13793440 has 24 divisors (see below), whose sum is σ = 32587380. Its totient is φ = 5517312.

The previous prime is 13793431. The next prime is 13793441. The reversal of 13793440 is 4439731.

It can be written as a sum of positive squares in 2 ways, for example, as 12082576 + 1710864 = 3476^2 + 1308^2 .

It is not an unprimeable number, because it can be changed into a prime (13793441) 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, 42945 + ... + 43264.

Almost surely, 2^13793440 is an apocalyptic number.

13793440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13793440 is an abundant number, since it is smaller than the sum of its proper divisors (18793940).

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

13793440 is an equidigital number, since it uses as much as digits as its factorization.

13793440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86224 (or 86216 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 13793440 is about 3713.9520729272. The cubic root of 13793440 is about 239.8230176688.

The spelling of 13793440 in words is "thirteen million, seven hundred ninety-three thousand, four hundred forty".