238889083920 has 80 divisors (see below), whose sum is σ = 779532815040. Its totient is φ = 60350925312.

The previous prime is 238889083897. The next prime is 238889083931. The reversal of 238889083920 is 29380988832.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×238889083920² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26189419 + ... + 26198538.

It is an arithmetic number, because the mean of its divisors is an integer number (9744160188).

Almost surely, 2^238889083920 is an apocalyptic number.

238889083920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238889083920 is an abundant number, since it is smaller than the sum of its proper divisors (540643731120).

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

238889083920 is a wasteful number, since it uses less digits than its factorization.

238889083920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52387992 (or 52387986 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 60.

The spelling of 238889083920 in words is "two hundred thirty-eight billion, eight hundred eighty-nine million, eighty-three thousand, nine hundred twenty".