15228424 has 24 divisors (see below), whose sum is σ = 30140910. Its totient is φ = 7212096.

The previous prime is 15228419. The next prime is 15228449. The reversal of 15228424 is 42482251.

It can be written as a sum of positive squares in only one way, i.e., 13032100 + 2196324 = 3610^2 + 1482^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15228392 and 15228401.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 252 + ... + 5524.

Almost surely, 2^15228424 is an apocalyptic number.

It is an amenable number.

15228424 is a deficient number, since it is larger than the sum of its proper divisors (14912486).

15228424 is a wasteful number, since it uses less digits than its factorization.

15228424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5317 (or 5294 counting only the distinct ones).

The product of its digits is 5120, while the sum is 28.

The square root of 15228424 is about 3902.3613364218. The cubic root of 15228424 is about 247.8667772157.

The spelling of 15228424 in words is "fifteen million, two hundred twenty-eight thousand, four hundred twenty-four".