13223972 has 12 divisors (see below), whose sum is σ = 23217180. Its totient is φ = 6590496.

The previous prime is 13223957. The next prime is 13224037. The reversal of 13223972 is 27932231.

It can be written as a sum of positive squares in 2 ways, for example, as 7540516 + 5683456 = 2746^2 + 2384^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3947 + ... + 6482.

It is an arithmetic number, because the mean of its divisors is an integer number (1934765).

Almost surely, 2^13223972 is an apocalyptic number.

It is an amenable number.

13223972 is a deficient number, since it is larger than the sum of its proper divisors (9993208).

13223972 is a wasteful number, since it uses less digits than its factorization.

13223972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10750 (or 10748 counting only the distinct ones).

The product of its digits is 4536, while the sum is 29.

The square root of 13223972 is about 3636.4779663845. The cubic root of 13223972 is about 236.4761286837.

The spelling of 13223972 in words is "thirteen million, two hundred twenty-three thousand, nine hundred seventy-two".