812812104 has 64 divisors (see below), whose sum is σ = 2431497600. Its totient is φ = 250095168.

The previous prime is 812812073. The next prime is 812812123. The reversal of 812812104 is 401218218.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 141924 + ... + 147539.

It is an arithmetic number, because the mean of its divisors is an integer number (37992150).

Almost surely, 2^812812104 is an apocalyptic number.

It is an amenable number.

812812104 is an abundant number, since it is smaller than the sum of its proper divisors (1618685496).

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

812812104 is a wasteful number, since it uses less digits than its factorization.

812812104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289491 (or 289481 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 812812104 is about 28509.8597681574. The cubic root of 812812104 is about 933.2472540795.

The spelling of 812812104 in words is "eight hundred twelve million, eight hundred twelve thousand, one hundred four".