13220570 has 32 divisors (see below), whose sum is σ = 26804736. Its totient is φ = 4651200.

The previous prime is 13220567. The next prime is 13220587. The reversal of 13220570 is 7502231.

It is a super-2 number, since 2×13220570² = 349566942249800, 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, 1472 + ... + 5348.

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

Almost surely, 2^13220570 is an apocalyptic number.

13220570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13220570 is an abundant number, since it is smaller than the sum of its proper divisors (13584166).

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

13220570 is a wasteful number, since it uses less digits than its factorization.

13220570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3926.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 13220570 is about 3636.0101760034. The cubic root of 13220570 is about 236.4558483225.

It can be divided in two parts, 132 and 20570, that added together give a palindrome (20702).

The spelling of 13220570 in words is "thirteen million, two hundred twenty thousand, five hundred seventy".