811922052 has 48 divisors (see below), whose sum is σ = 1938867840. Its totient is φ = 264346368.

The previous prime is 811922029. The next prime is 811922081. The reversal of 811922052 is 250229118.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145449 + ... + 150927.

It is an arithmetic number, because the mean of its divisors is an integer number (40393080).

Almost surely, 2^811922052 is an apocalyptic number.

It is an amenable number.

811922052 is an abundant number, since it is smaller than the sum of its proper divisors (1126945788).

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

811922052 is a wasteful number, since it uses less digits than its factorization.

811922052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5772 (or 5770 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 811922052 is about 28494.2459454536. The cubic root of 811922052 is about 932.9064857124.

The spelling of 811922052 in words is "eight hundred eleven million, nine hundred twenty-two thousand, fifty-two".