15222472 has 16 divisors (see below), whose sum is σ = 29026800. Its totient is φ = 7482000.

The previous prime is 15222469. The next prime is 15222479. The reversal of 15222472 is 27422251.

It is not an unprimeable number, because it can be changed into a prime (15222479) 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, 15654 + ... + 16597.

It is an arithmetic number, because the mean of its divisors is an integer number (1814175).

Almost surely, 2^15222472 is an apocalyptic number.

It is an amenable number.

15222472 is a deficient number, since it is larger than the sum of its proper divisors (13804328).

15222472 is a wasteful number, since it uses less digits than its factorization.

15222472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32316 (or 32312 counting only the distinct ones).

The product of its digits is 2240, while the sum is 25.

The square root of 15222472 is about 3901.5986467088. The cubic root of 15222472 is about 247.8344802578.

The spelling of 15222472 in words is "fifteen million, two hundred twenty-two thousand, four hundred seventy-two".