877785228 has 24 divisors (see below), whose sum is σ = 2275739760. Its totient is φ = 292595040.

The previous prime is 877785221. The next prime is 877785239. The reversal of 877785228 is 822587778.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (877785221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4063713 + ... + 4063928.

It is an arithmetic number, because the mean of its divisors is an integer number (94822490).

Almost surely, 2^877785228 is an apocalyptic number.

It is an amenable number.

877785228 is an abundant number, since it is smaller than the sum of its proper divisors (1397954532).

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

877785228 is a wasteful number, since it uses less digits than its factorization.

877785228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8127654 (or 8127646 counting only the distinct ones).

The product of its digits is 3512320, while the sum is 54.

The square root of 877785228 is about 29627.4404564417. The cubic root of 877785228 is about 957.4793640157.

The spelling of 877785228 in words is "eight hundred seventy-seven million, seven hundred eighty-five thousand, two hundred twenty-eight".