13215146 has 16 divisors (see below), whose sum is σ = 23847360. Its totient is φ = 5365440.

The previous prime is 13215121. The next prime is 13215151. The reversal of 13215146 is 64151231.

13215146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24575 + ... + 25106.

It is an arithmetic number, because the mean of its divisors is an integer number (1490460).

Almost surely, 2^13215146 is an apocalyptic number.

13215146 is a deficient number, since it is larger than the sum of its proper divisors (10632214).

13215146 is a wasteful number, since it uses less digits than its factorization.

13215146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49709.

The product of its digits is 720, while the sum is 23.

The square root of 13215146 is about 3635.2642269854. The cubic root of 13215146 is about 236.4235070050.

Adding to 13215146 its reverse (64151231), we get a palindrome (77366377).

The spelling of 13215146 in words is "thirteen million, two hundred fifteen thousand, one hundred forty-six".