877777920 has 264 divisors, whose sum is σ = 3119234976. Its totient is φ = 228114432.

The previous prime is 877777913. The next prime is 877777931. The reversal of 877777920 is 29777778.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1981219 + ... + 1981661.

It is an arithmetic number, because the mean of its divisors is an integer number (11815284).

Almost surely, 2^877777920 is an apocalyptic number.

877777920 is a gapful number since it is divisible by the number (80) 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 877777920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1559617488).

877777920 is an abundant number, since it is smaller than the sum of its proper divisors (2241457056).

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

877777920 is a wasteful number, since it uses less digits than its factorization.

877777920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 2420208, while the sum is 54.

The square root of 877777920 is about 29627.3171245727. The cubic root of 877777920 is about 957.4767068438.

The spelling of 877777920 in words is "eight hundred seventy-seven million, seven hundred seventy-seven thousand, nine hundred twenty".