38731008 has 144 divisors (see below), whose sum is σ = 111847680. Its totient is φ = 11870208.

The previous prime is 38731001. The next prime is 38731027. The reversal of 38731008 is 80013783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38731001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 824041 + ... + 824087.

It is an arithmetic number, because the mean of its divisors is an integer number (776720).

Almost surely, 2^38731008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38731008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55923840).

38731008 is an abundant number, since it is smaller than the sum of its proper divisors (73116672).

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

38731008 is a wasteful number, since it uses less digits than its factorization.

38731008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 38731008 is about 6223.4241378842. The cubic root of 38731008 is about 338.3396792930.

The spelling of 38731008 in words is "thirty-eight million, seven hundred thirty-one thousand, eight".