38668628 has 12 divisors (see below), whose sum is σ = 67808160. Its totient is φ = 19294872.

The previous prime is 38668613. The next prime is 38668633. The reversal of 38668628 is 82686683.

It is a happy number.

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, 7598 + ... + 11621.

It is an arithmetic number, because the mean of its divisors is an integer number (5650680).

Almost surely, 2^38668628 is an apocalyptic number.

It is an amenable number.

38668628 is a deficient number, since it is larger than the sum of its proper divisors (29139532).

38668628 is a wasteful number, since it uses less digits than its factorization.

38668628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19726 (or 19724 counting only the distinct ones).

The product of its digits is 663552, while the sum is 47.

The square root of 38668628 is about 6218.4104078132. The cubic root of 38668628 is about 338.1579388623.

The spelling of 38668628 in words is "thirty-eight million, six hundred sixty-eight thousand, six hundred twenty-eight".