811857088 has 168 divisors, whose sum is σ = 1980590400. Its totient is φ = 328753152.

The previous prime is 811857077. The next prime is 811857119. The reversal of 811857088 is 880758118.

It is a super-2 number, since 2×811857088² = 1318223862671679488, which contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 7184520 + ... + 7184632.

Almost surely, 2^811857088 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 811857088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (990295200).

811857088 is an abundant number, since it is smaller than the sum of its proper divisors (1168733312).

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

811857088 is a wasteful number, since it uses less digits than its factorization.

811857088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 46.

The square root of 811857088 is about 28493.1059731999. The cubic root of 811857088 is about 932.8816036221.

The spelling of 811857088 in words is "eight hundred eleven million, eight hundred fifty-seven thousand, eighty-eight".