15368868 has 18 divisors (see below), whose sum is σ = 38849174. Its totient is φ = 5122944.

The previous prime is 15368827. The next prime is 15368879. The reversal of 15368868 is 86886351.

It can be written as a sum of positive squares in only one way, i.e., 11009124 + 4359744 = 3318^2 + 2088^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 213421 + ... + 213492.

Almost surely, 2^15368868 is an apocalyptic number.

15368868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

15368868 is an abundant number, since it is smaller than the sum of its proper divisors (23480306).

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

15368868 is a wasteful number, since it uses less digits than its factorization.

15368868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426923 (or 426918 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 15368868 is about 3920.3147832795. The cubic root of 15368868 is about 248.6264297066.

It can be divided in two parts, 1536 and 8868, that added together give a square (10404 = 102²).

The spelling of 15368868 in words is "fifteen million, three hundred sixty-eight thousand, eight hundred sixty-eight".