13228972 has 12 divisors (see below), whose sum is σ = 23248456. Its totient is φ = 6586560.

The previous prime is 13228967. The next prime is 13228973. The reversal of 13228972 is 27982231.

It is not an unprimeable number, because it can be changed into a prime (13228973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5898 + ... + 7825.

Almost surely, 2^13228972 is an apocalyptic number.

It is an amenable number.

13228972 is a deficient number, since it is larger than the sum of its proper divisors (10019484).

13228972 is a wasteful number, since it uses less digits than its factorization.

13228972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13968 (or 13966 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 13228972 is about 3637.1653797978. The cubic root of 13228972 is about 236.5059288995.

The spelling of 13228972 in words is "thirteen million, two hundred twenty-eight thousand, nine hundred seventy-two".