15243988 has 12 divisors (see below), whose sum is σ = 26722080. Its totient is φ = 7609112.

The previous prime is 15243979. The next prime is 15244003. The reversal of 15243988 is 88934251.

15243988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 15243988.

It is a congruent 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, 256 + ... + 5527.

It is an arithmetic number, because the mean of its divisors is an integer number (2226840).

Almost surely, 2^15243988 is an apocalyptic number.

It is an amenable number.

15243988 is a deficient number, since it is larger than the sum of its proper divisors (11478092).

15243988 is a wasteful number, since it uses less digits than its factorization.

15243988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6446 (or 6444 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 15243988 is about 3904.3550043509. The cubic root of 15243988 is about 247.9511914006.

The spelling of 15243988 in words is "fifteen million, two hundred forty-three thousand, nine hundred eighty-eight".