938720880 has 80 divisors (see below), whose sum is σ = 3233379360. Its totient is φ = 250324992.

The previous prime is 938720869. The next prime is 938720899. The reversal of 938720880 is 88027839.

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

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 215137 + ... + 219456.

It is an arithmetic number, because the mean of its divisors is an integer number (40417242).

Almost surely, 2^938720880 is an apocalyptic number.

938720880 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

938720880 is an abundant number, since it is smaller than the sum of its proper divisors (2294658480).

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

938720880 is a wasteful number, since it uses less digits than its factorization.

938720880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434615 (or 434603 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 938720880 is about 30638.5521851148. The cubic root of 938720880 is about 979.1415778774.

The spelling of 938720880 in words is "nine hundred thirty-eight million, seven hundred twenty thousand, eight hundred eighty".