13215790 has 32 divisors (see below), whose sum is σ = 27748800. Its totient is φ = 4529952.

The previous prime is 13215781. The next prime is 13215791. The reversal of 13215790 is 9751231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13215791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1504 + ... + 5356.

It is an arithmetic number, because the mean of its divisors is an integer number (867150).

Almost surely, 2^13215790 is an apocalyptic number.

13215790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13215790 is an abundant number, since it is smaller than the sum of its proper divisors (14533010).

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

13215790 is an equidigital number, since it uses as much as digits as its factorization.

13215790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3881 (or 3867 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 13215790 is about 3635.3528026864. The cubic root of 13215790 is about 236.4273474031.

The spelling of 13215790 in words is "thirteen million, two hundred fifteen thousand, seven hundred ninety".