13415640 has 64 divisors (see below), whose sum is σ = 45999360. Its totient is φ = 3066240.

The previous prime is 13415629. The next prime is 13415659. The reversal of 13415640 is 4651431.

13415640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 13415640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7146 + ... + 8825.

It is an arithmetic number, because the mean of its divisors is an integer number (718740).

Almost surely, 2^13415640 is an apocalyptic number.

13415640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13415640 is an abundant number, since it is smaller than the sum of its proper divisors (32583720).

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

13415640 is a wasteful number, since it uses less digits than its factorization.

13415640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15992 (or 15988 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 13415640 is about 3662.7366817723. The cubic root of 13415640 is about 237.6131464571.

The spelling of 13415640 in words is "thirteen million, four hundred fifteen thousand, six hundred forty".