15224013 has 12 divisors (see below), whose sum is σ = 25131808. Its totient is φ = 8699400.

The previous prime is 15224009. The next prime is 15224017. The reversal of 15224013 is 31042251.

15224013 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (15224009) and next prime (15224017).

It is not a de Polignac number, because 15224013 - 2² = 15224009 is a prime.

It is a Duffinian number.

15224013 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15224017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120763 + ... + 120888.

Almost surely, 2^15224013 is an apocalyptic number.

It is an amenable number.

15224013 is a deficient number, since it is larger than the sum of its proper divisors (9907795).

15224013 is a wasteful number, since it uses less digits than its factorization.

15224013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241664 (or 241661 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 15224013 is about 3901.7961248635. The cubic root of 15224013 is about 247.8428428953.

Adding to 15224013 its reverse (31042251), we get a palindrome (46266264).

The spelling of 15224013 in words is "fifteen million, two hundred twenty-four thousand, thirteen".