811533996 has 288 divisors, whose sum is σ = 2669162496. Its totient is φ = 202176000.

The previous prime is 811533991. The next prime is 811534037. The reversal of 811533996 is 699335118.

811533996 = T₈₃ + T₈₄ + ... + T₁₆₉₄.

It is not an unprimeable number, because it can be changed into a prime (811533991) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6194851 + ... + 6194981.

Almost surely, 2^811533996 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 811533996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1334581248).

811533996 is an abundant number, since it is smaller than the sum of its proper divisors (1857628500).

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

811533996 is a wasteful number, since it uses less digits than its factorization.

811533996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 248 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 811533996 is about 28487.4357568385. The cubic root of 811533996 is about 932.7578352973.

The spelling of 811533996 in words is "eight hundred eleven million, five hundred thirty-three thousand, nine hundred ninety-six".