38890928 has 10 divisors (see below), whose sum is σ = 75351204. Its totient is φ = 19445456.

The previous prime is 38890921. The next prime is 38890981. The reversal of 38890928 is 82909883.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (38890921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1215326 + ... + 1215357.

Almost surely, 2^38890928 is an apocalyptic number.

It is an amenable number.

38890928 is a deficient number, since it is larger than the sum of its proper divisors (36460276).

38890928 is a wasteful number, since it uses less digits than its factorization.

38890928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2430691 (or 2430685 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 38890928 is about 6236.2591350905. The cubic root of 38890928 is about 338.8047070589.

The spelling of 38890928 in words is "thirty-eight million, eight hundred ninety thousand, nine hundred twenty-eight".