38989708824 has 128 divisors (see below), whose sum is σ = 108831340800. Its totient is φ = 11540981760.

The previous prime is 38989708819. The next prime is 38989708829. The reversal of 38989708824 is 42880798983.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (38989708819) and next prime (38989708829).

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38989708829) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1940172 + ... + 1960164.

It is an arithmetic number, because the mean of its divisors is an integer number (850244850).

Almost surely, 2^38989708824 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 38989708824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54415670400).

38989708824 is an abundant number, since it is smaller than the sum of its proper divisors (69841631976).

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

38989708824 is a wasteful number, since it uses less digits than its factorization.

38989708824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20185 (or 20181 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 66.

The spelling of 38989708824 in words is "thirty-eight billion, nine hundred eighty-nine million, seven hundred eight thousand, eight hundred twenty-four".