38685906 has 24 divisors (see below), whose sum is σ = 95793984. Its totient is φ = 11053080.

The previous prime is 38685869. The next prime is 38685917. The reversal of 38685906 is 60958683.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153390 + ... + 153641.

It is an arithmetic number, because the mean of its divisors is an integer number (3991416).

Almost surely, 2^38685906 is an apocalyptic number.

38685906 is an abundant number, since it is smaller than the sum of its proper divisors (57108078).

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

38685906 is a wasteful number, since it uses less digits than its factorization.

38685906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307046 (or 307043 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 38685906 is about 6219.7995144538. The cubic root of 38685906 is about 338.2082968499.

The spelling of 38685906 in words is "thirty-eight million, six hundred eighty-five thousand, nine hundred six".