15242242400 has 144 divisors (see below), whose sum is σ = 46392030720. Its totient is φ = 4750809600.

The previous prime is 15242242397. The next prime is 15242242423. The reversal of 15242242400 is 424224251.

It is a self number, because there is not a number n which added to its sum of digits gives 15242242400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62120 + ... + 185319.

It is an arithmetic number, because the mean of its divisors is an integer number (322166880).

Almost surely, 2^15242242400 is an apocalyptic number.

15242242400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15242242400 is an abundant number, since it is smaller than the sum of its proper divisors (31149788320).

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

15242242400 is a wasteful number, since it uses less digits than its factorization.

15242242400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247477 (or 247464 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 15242242400 its reverse (424224251), we get a palindrome (15666466651).

The spelling of 15242242400 in words is "fifteen billion, two hundred forty-two million, two hundred forty-two thousand, four hundred".