13391690 has 32 divisors (see below), whose sum is σ = 26804736. Its totient is φ = 4783680.

The previous prime is 13391689. The next prime is 13391701. The reversal of 13391690 is 9619331.

13391690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13391690² = 358674722112200, which contains 22 as substring.

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, 2369 + ... + 5691.

It is an arithmetic number, because the mean of its divisors is an integer number (837648).

Almost surely, 2^13391690 is an apocalyptic number.

13391690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13391690 is an abundant number, since it is smaller than the sum of its proper divisors (13413046).

13391690 is a wasteful number, since it uses less digits than its factorization.

13391690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 13391690 is about 3659.4658080108. The cubic root of 13391690 is about 237.4716642095.

The spelling of 13391690 in words is "thirteen million, three hundred ninety-one thousand, six hundred ninety".