15228872 has 16 divisors (see below), whose sum is σ = 30234060. Its totient is φ = 7166464.

The previous prime is 15228869. The next prime is 15228877. The reversal of 15228872 is 27882251.

It can be written as a sum of positive squares in 2 ways, for example, as 14546596 + 682276 = 3814^2 + 826^2 .

It is not an unprimeable number, because it can be changed into a prime (15228877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55853 + ... + 56124.

Almost surely, 2^15228872 is an apocalyptic number.

It is an amenable number.

15228872 is a deficient number, since it is larger than the sum of its proper divisors (15005188).

15228872 is a wasteful number, since it uses less digits than its factorization.

15228872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112000 (or 111996 counting only the distinct ones).

The product of its digits is 17920, while the sum is 35.

The square root of 15228872 is about 3902.4187371424. The cubic root of 15228872 is about 247.8692078289.

The spelling of 15228872 in words is "fifteen million, two hundred twenty-eight thousand, eight hundred seventy-two".