13213146 has 32 divisors (see below), whose sum is σ = 27151488. Its totient is φ = 4285440.

The previous prime is 13213139. The next prime is 13213153. The reversal of 13213146 is 64131231.

It is an interprime number because it is at equal distance from previous prime (13213139) and next prime (13213153).

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, 42331 + ... + 42641.

It is an arithmetic number, because the mean of its divisors is an integer number (848484).

Almost surely, 2^13213146 is an apocalyptic number.

13213146 is an abundant number, since it is smaller than the sum of its proper divisors (13938342).

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

13213146 is a wasteful number, since it uses less digits than its factorization.

13213146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486.

The product of its digits is 432, while the sum is 21.

The square root of 13213146 is about 3634.9891334088. The cubic root of 13213146 is about 236.4115795073.

Adding to 13213146 its reverse (64131231), we get a palindrome (77344377).

The spelling of 13213146 in words is "thirteen million, two hundred thirteen thousand, one hundred forty-six".