15242731388 has 24 divisors (see below), whose sum is σ = 26797383984. Its totient is φ = 7586409600.

The previous prime is 15242731337. The next prime is 15242731397. The reversal of 15242731388 is 88313724251.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 866456 + ... + 883872.

It is an arithmetic number, because the mean of its divisors is an integer number (1116557666).

Almost surely, 2^15242731388 is an apocalyptic number.

It is an amenable number.

15242731388 is a deficient number, since it is larger than the sum of its proper divisors (11554652596).

15242731388 is a wasteful number, since it uses less digits than its factorization.

15242731388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18413 (or 18411 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The spelling of 15242731388 in words is "fifteen billion, two hundred forty-two million, seven hundred thirty-one thousand, three hundred eighty-eight".