811148976 has 120 divisors (see below), whose sum is σ = 2556503040. Its totient is φ = 237859200.

The previous prime is 811148971. The next prime is 811148977. The reversal of 811148976 is 679841118.

It is a happy number.

It is a super-2 number, since 2×811148976² = 1315925322531697152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (811148971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40845 + ... + 57363.

It is an arithmetic number, because the mean of its divisors is an integer number (21304192).

Almost surely, 2^811148976 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 811148976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1278251520).

811148976 is an abundant number, since it is smaller than the sum of its proper divisors (1745354064).

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

811148976 is a wasteful number, since it uses less digits than its factorization.

811148976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16575 (or 16566 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 811148976 is about 28480.6772391388. The cubic root of 811148976 is about 932.6103010255.

The spelling of 811148976 in words is "eight hundred eleven million, one hundred forty-eight thousand, nine hundred seventy-six".