876221388 has 120 divisors (see below), whose sum is σ = 2631689984. Its totient is φ = 249026400.

The previous prime is 876221371. The next prime is 876221413. The reversal of 876221388 is 883122678.

876221388 is a `hidden beast` number, since 8 + 7 + 622 + 13 + 8 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 477633 + ... + 479463.

Almost surely, 2^876221388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 876221388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1315844992).

876221388 is an abundant number, since it is smaller than the sum of its proper divisors (1755468596).

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

876221388 is a wasteful number, since it uses less digits than its factorization.

876221388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065 (or 2054 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 876221388 is about 29601.0369412965. The cubic root of 876221388 is about 956.9104189889.

The spelling of 876221388 in words is "eight hundred seventy-six million, two hundred twenty-one thousand, three hundred eighty-eight".