15240140988 has 24 divisors (see below), whose sum is σ = 35633361792. Its totient is φ = 5069613744.

The previous prime is 15240140953. The next prime is 15240140999. The reversal of 15240140988 is 88904104251.

It is a super-2 number, since 2×15240140988² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 1298070 + ... + 1309757.

It is an arithmetic number, because the mean of its divisors is an integer number (1484723408).

Almost surely, 2^15240140988 is an apocalyptic number.

It is an amenable number.

15240140988 is an abundant number, since it is smaller than the sum of its proper divisors (20393220804).

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

15240140988 is a wasteful number, since it uses less digits than its factorization.

15240140988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2608321 (or 2608319 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The spelling of 15240140988 in words is "fifteen billion, two hundred forty million, one hundred forty thousand, nine hundred eighty-eight".