38128912 has 20 divisors (see below), whose sum is σ = 74532060. Its totient is φ = 18894848.

The previous prime is 38128903. The next prime is 38128913. The reversal of 38128912 is 21982183.

It can be written as a sum of positive squares in 2 ways, for example, as 19501056 + 18627856 = 4416^2 + 4316^2 .

It is not an unprimeable number, because it can be changed into a prime (38128913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8737 + ... + 12352.

It is an arithmetic number, because the mean of its divisors is an integer number (3726603).

Almost surely, 2^38128912 is an apocalyptic number.

It is an amenable number.

38128912 is a deficient number, since it is larger than the sum of its proper divisors (36403148).

38128912 is a wasteful number, since it uses less digits than its factorization.

38128912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21210 (or 21204 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 38128912 is about 6174.8612939887. The cubic root of 38128912 is about 336.5772861225.

The spelling of 38128912 in words is "thirty-eight million, one hundred twenty-eight thousand, nine hundred twelve".