811572852 has 12 divisors (see below), whose sum is σ = 1893670016. Its totient is φ = 270524280.

The previous prime is 811572833. The next prime is 811572919. The reversal of 811572852 is 258275118.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 811572852.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33815524 + ... + 33815547.

Almost surely, 2^811572852 is an apocalyptic number.

It is an amenable number.

811572852 is an abundant number, since it is smaller than the sum of its proper divisors (1082097164).

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

811572852 is a wasteful number, since it uses less digits than its factorization.

811572852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67631078 (or 67631076 counting only the distinct ones).

The product of its digits is 44800, while the sum is 39.

The square root of 811572852 is about 28488.1177335394. The cubic root of 811572852 is about 932.7727217799.

The spelling of 811572852 in words is "eight hundred eleven million, five hundred seventy-two thousand, eight hundred fifty-two".