38916666 has 32 divisors (see below), whose sum is σ = 89467200. Its totient is φ = 12524400.

The previous prime is 38916659. The next prime is 38916671. The reversal of 38916666 is 66661983.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10860 + ... + 13991.

It is an arithmetic number, because the mean of its divisors is an integer number (2795850).

Almost surely, 2^38916666 is an apocalyptic number.

38916666 is an abundant number, since it is smaller than the sum of its proper divisors (50550534).

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

38916666 is a wasteful number, since it uses less digits than its factorization.

38916666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24891 (or 24885 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 38916666 is about 6238.3223706378. The cubic root of 38916666 is about 338.8794308487.

The spelling of 38916666 in words is "thirty-eight million, nine hundred sixteen thousand, six hundred sixty-six".