15240221224 has 16 divisors (see below), whose sum is σ = 28694980800. Its totient is φ = 7588226352.

The previous prime is 15240221219. The next prime is 15240221231. The reversal of 15240221224 is 42212204251.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3983502 + ... + 3987325.

It is an arithmetic number, because the mean of its divisors is an integer number (1793436300).

Almost surely, 2^15240221224 is an apocalyptic number.

It is an amenable number.

15240221224 is a deficient number, since it is larger than the sum of its proper divisors (13454759576).

15240221224 is a wasteful number, since it uses less digits than its factorization.

15240221224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7971072 (or 7971068 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 15240221224 its reverse (42212204251), we get a palindrome (57452425475).

The spelling of 15240221224 in words is "fifteen billion, two hundred forty million, two hundred twenty-one thousand, two hundred twenty-four".