38992886784 has 220 divisors, whose sum is σ = 116886467544. Its totient is φ = 12947890176.

The previous prime is 38992886701. The next prime is 38992886789. The reversal of 38992886784 is 48768829983.

38992886784 is a `hidden beast` number, since 389 + 92 + 8 + 86 + 7 + 84 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38992886789) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26292507 + ... + 26293989.

Almost surely, 2^38992886784 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 38992886784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58443233772).

38992886784 is an abundant number, since it is smaller than the sum of its proper divisors (77893580760).

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

38992886784 is a wasteful number, since it uses less digits than its factorization.

38992886784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832 (or 1805 counting only the distinct ones).

The product of its digits is 334430208, while the sum is 72.

The spelling of 38992886784 in words is "thirty-eight billion, nine hundred ninety-two million, eight hundred eighty-six thousand, seven hundred eighty-four".