13490904 has 64 divisors (see below), whose sum is σ = 38903040. Its totient is φ = 3818880.

The previous prime is 13490879. The next prime is 13490947. The reversal of 13490904 is 40909431.

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, 21702 + ... + 22314.

It is an arithmetic number, because the mean of its divisors is an integer number (607860).

Almost surely, 2^13490904 is an apocalyptic number.

13490904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13490904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19451520).

13490904 is an abundant number, since it is smaller than the sum of its proper divisors (25412136).

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

13490904 is a wasteful number, since it uses less digits than its factorization.

13490904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 13490904 is about 3672.9965967858. The cubic root of 13490904 is about 238.0566680024.

The spelling of 13490904 in words is "thirteen million, four hundred ninety thousand, nine hundred four".