38991152 has 20 divisors (see below), whose sum is σ = 75876840. Its totient is φ = 19410048.

The previous prime is 38991137. The next prime is 38991157. The reversal of 38991152 is 25119983.

It is not an unprimeable number, because it can be changed into a prime (38991157) 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, 1502 + ... + 8957.

It is an arithmetic number, because the mean of its divisors is an integer number (3793842).

Almost surely, 2^38991152 is an apocalyptic number.

It is an amenable number.

38991152 is a deficient number, since it is larger than the sum of its proper divisors (36885688).

38991152 is a wasteful number, since it uses less digits than its factorization.

38991152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10700 (or 10694 counting only the distinct ones).

The product of its digits is 19440, while the sum is 38.

The square root of 38991152 is about 6244.2895512620. The cubic root of 38991152 is about 339.0954966875.

The spelling of 38991152 in words is "thirty-eight million, nine hundred ninety-one thousand, one hundred fifty-two".