15868648 has 16 divisors (see below), whose sum is σ = 31320000. Its totient is φ = 7516656.

The previous prime is 15868639. The next prime is 15868663. The reversal of 15868648 is 84686851.

It is a junction number, because it is equal to n+sod(n) for n = 15868598 and 15868607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52048 + ... + 52351.

It is an arithmetic number, because the mean of its divisors is an integer number (1957500).

Almost surely, 2^15868648 is an apocalyptic number.

It is an amenable number.

15868648 is a deficient number, since it is larger than the sum of its proper divisors (15451352).

15868648 is a wasteful number, since it uses less digits than its factorization.

15868648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104424 (or 104420 counting only the distinct ones).

The product of its digits is 368640, while the sum is 46.

The square root of 15868648 is about 3983.5471630194. The cubic root of 15868648 is about 251.2927595682.

The spelling of 15868648 in words is "fifteen million, eight hundred sixty-eight thousand, six hundred forty-eight".