811132940 has 12 divisors (see below), whose sum is σ = 1703379216. Its totient is φ = 324453168.

The previous prime is 811132939. The next prime is 811132957. The reversal of 811132940 is 49231118.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20278304 + ... + 20278343.

It is an arithmetic number, because the mean of its divisors is an integer number (141948268).

Almost surely, 2^811132940 is an apocalyptic number.

It is an amenable number.

811132940 is an abundant number, since it is smaller than the sum of its proper divisors (892246276).

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

811132940 is a wasteful number, since it uses less digits than its factorization.

811132940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40556656 (or 40556654 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 811132940 is about 28480.3957135430. The cubic root of 811132940 is about 932.6041552423.

The spelling of 811132940 in words is "eight hundred eleven million, one hundred thirty-two thousand, nine hundred forty".