877881000 has 64 divisors (see below), whose sum is σ = 2738998080. Its totient is φ = 234100800.

The previous prime is 877880989. The next prime is 877881007. The reversal of 877881000 is 188778.

It is a happy number.

It is a super-2 number, since 2×877881000² = 1541350100322000000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 877881000.

It is not an unprimeable number, because it can be changed into a prime (877881007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143314 + ... + 149313.

It is an arithmetic number, because the mean of its divisors is an integer number (42796845).

Almost surely, 2^877881000 is an apocalyptic number.

It is an amenable number.

877881000 is an abundant number, since it is smaller than the sum of its proper divisors (1861117080).

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

877881000 is a wasteful number, since it uses less digits than its factorization.

877881000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292651 (or 292637 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 39.

The square root of 877881000 is about 29629.0566842753. The cubic root of 877881000 is about 957.5141851298.

It can be divided in two parts, 87788 and 1000, that added together give a palindrome (88788).

The spelling of 877881000 in words is "eight hundred seventy-seven million, eight hundred eighty-one thousand".