15224772 has 12 divisors (see below), whose sum is σ = 35524496. Its totient is φ = 5074920.

The previous prime is 15224771. The next prime is 15224779. The reversal of 15224772 is 27742251.

15224772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (15224771) 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, 634354 + ... + 634377.

Almost surely, 2^15224772 is an apocalyptic number.

15224772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15224772 is an abundant number, since it is smaller than the sum of its proper divisors (20299724).

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

15224772 is a wasteful number, since it uses less digits than its factorization.

15224772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268738 (or 1268736 counting only the distinct ones).

The product of its digits is 7840, while the sum is 30.

The square root of 15224772 is about 3901.8933865497. The cubic root of 15224772 is about 247.8469615989.

The spelling of 15224772 in words is "fifteen million, two hundred twenty-four thousand, seven hundred seventy-two".