811990048 has 48 divisors (see below), whose sum is σ = 1641427200. Its totient is φ = 395214336.

The previous prime is 811990019. The next prime is 811990129. The reversal of 811990048 is 840099118.

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 7 ways as a sum of consecutive naturals, for example, 297940 + ... + 300652.

It is an arithmetic number, because the mean of its divisors is an integer number (34196400).

Almost surely, 2^811990048 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 811990048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (820713600).

811990048 is an abundant number, since it is smaller than the sum of its proper divisors (829437152).

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

811990048 is a wasteful number, since it uses less digits than its factorization.

811990048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2969 (or 2961 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 811990048 is about 28495.4390736483. The cubic root of 811990048 is about 932.9325276781.

The spelling of 811990048 in words is "eight hundred eleven million, nine hundred ninety thousand, forty-eight".