38931488 has 18 divisors (see below), whose sum is σ = 76715919. Its totient is φ = 19448096.

The previous prime is 38931467. The next prime is 38931491. The reversal of 38931488 is 88413983.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 19465744 + 19465744 = 4412^2 + 4412^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=4412.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 34745 + ... + 35847.

Almost surely, 2^38931488 is an apocalyptic number.

It is an amenable number.

38931488 is a deficient number, since it is larger than the sum of its proper divisors (37784431).

38931488 is an frugal number, since it uses more digits than its factorization.

38931488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216 (or 1105 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 38931488 is about 6239.5102371901. The cubic root of 38931488 is about 338.9224478377.

Multiplying 38931488 by its product of digits (165888), we get a square (6458266681344 = 2541312²).

The spelling of 38931488 in words is "thirty-eight million, nine hundred thirty-one thousand, four hundred eighty-eight".