13440472 has 32 divisors (see below), whose sum is σ = 27414720. Its totient is φ = 6151680.

The previous prime is 13440461. The next prime is 13440473. The reversal of 13440472 is 27404431.

13440472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13440473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3697 + ... + 6367.

It is an arithmetic number, because the mean of its divisors is an integer number (856710).

Almost surely, 2^13440472 is an apocalyptic number.

It is an amenable number.

13440472 is an abundant number, since it is smaller than the sum of its proper divisors (13974248).

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

13440472 is a wasteful number, since it uses less digits than its factorization.

13440472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731 (or 2727 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 13440472 is about 3666.1249296771. The cubic root of 13440472 is about 237.7596613430.

The spelling of 13440472 in words is "thirteen million, four hundred forty thousand, four hundred seventy-two".