38239615872 has 96 divisors (see below), whose sum is σ = 110106107280. Its totient is φ = 12738705408.

The previous prime is 38239615849. The next prime is 38239615891. The reversal of 38239615872 is 27851693283.

38239615872 is a `hidden beast` number, since 38 + 2 + 396 + 158 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×38239615872² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2044708 + ... + 2063324.

Almost surely, 2^38239615872 is an apocalyptic number.

38239615872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38239615872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55053053640).

38239615872 is an abundant number, since it is smaller than the sum of its proper divisors (71866491408).

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

38239615872 is a wasteful number, since it uses less digits than its factorization.

38239615872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20420 (or 20405 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 38239615872 in words is "thirty-eight billion, two hundred thirty-nine million, six hundred fifteen thousand, eight hundred seventy-two".