15230724 has 24 divisors (see below), whose sum is σ = 36122688. Its totient is φ = 4993440.

The previous prime is 15230711. The next prime is 15230731. The reversal of 15230724 is 42703251.

It is a junction number, because it is equal to n+sod(n) for n = 15230694 and 15230703.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9672 + ... + 11135.

It is an arithmetic number, because the mean of its divisors is an integer number (1505112).

Almost surely, 2^15230724 is an apocalyptic number.

It is an amenable number.

15230724 is an abundant number, since it is smaller than the sum of its proper divisors (20891964).

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

15230724 is a wasteful number, since it uses less digits than its factorization.

15230724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20875 (or 20873 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 15230724 is about 3902.6560186622. The cubic root of 15230724 is about 247.8792553047.

Adding to 15230724 its reverse (42703251), we get a palindrome (57933975).

It can be divided in two parts, 152 and 30724, that added together give a triangular number (30876 = T₂₄₈).

The spelling of 15230724 in words is "fifteen million, two hundred thirty thousand, seven hundred twenty-four".