377978880 has 128 divisors (see below), whose sum is σ = 1211086800. Its totient is φ = 100663296.

The previous prime is 377978873. The next prime is 377978903. The reversal of 377978880 is 88879773.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 377978880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491136 + ... + 491904.

Almost surely, 2^377978880 is an apocalyptic number.

377978880 is a gapful number since it is divisible by the number (30) 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 377978880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (605543400).

377978880 is an abundant number, since it is smaller than the sum of its proper divisors (833107920).

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

377978880 is an frugal number, since it uses more digits than its factorization.

377978880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 57.

The square root of 377978880 is about 19441.6789398447. The cubic root of 377978880 is about 723.0292128101.

The spelling of 377978880 in words is "three hundred seventy-seven million, nine hundred seventy-eight thousand, eight hundred eighty".