38668668 has 12 divisors (see below), whose sum is σ = 90226920. Its totient is φ = 12889552.

The previous prime is 38668649. The next prime is 38668673. The reversal of 38668668 is 86686683.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 38668668.

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, 1611183 + ... + 1611206.

It is an arithmetic number, because the mean of its divisors is an integer number (7518910).

Almost surely, 2^38668668 is an apocalyptic number.

It is an amenable number.

38668668 is an abundant number, since it is smaller than the sum of its proper divisors (51558252).

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

38668668 is a wasteful number, since it uses less digits than its factorization.

38668668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3222396 (or 3222394 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 51.

The square root of 38668668 is about 6218.4136240684. The cubic root of 38668668 is about 338.1580554625.

The spelling of 38668668 in words is "thirty-eight million, six hundred sixty-eight thousand, six hundred sixty-eight".