38709440720 has 30 divisors (see below), whose sum is σ = 90003541302. Its totient is φ = 15483072384.

The previous prime is 38709440719. The next prime is 38709440767. The reversal of 38709440720 is 2704490783.

It can be written as a sum of positive squares in 3 ways, for example, as 8141813824 + 30567626896 = 90232^2 + 174836^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1748762 + ... + 1770758.

Almost surely, 2^38709440720 is an apocalyptic number.

It is an amenable number.

38709440720 is an abundant number, since it is smaller than the sum of its proper divisors (51294100582).

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

38709440720 is an frugal number, since it uses more digits than its factorization.

38709440720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44007 (or 22004 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 38709440720 in words is "thirty-eight billion, seven hundred nine million, four hundred forty thousand, seven hundred twenty".