13228572 has 24 divisors (see below), whose sum is σ = 35276416. Its totient is φ = 3779568.

The previous prime is 13228531. The next prime is 13228577. The reversal of 13228572 is 27582231.

13228572 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13228577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78658 + ... + 78825.

Almost surely, 2^13228572 is an apocalyptic number.

13228572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13228572 is an abundant number, since it is smaller than the sum of its proper divisors (22047844).

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

13228572 is a wasteful number, since it uses less digits than its factorization.

13228572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157497 (or 157495 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 13228572 is about 3637.1103915059. The cubic root of 13228572 is about 236.5035451585.

The spelling of 13228572 in words is "thirteen million, two hundred twenty-eight thousand, five hundred seventy-two".