813807104 has 40 divisors (see below), whose sum is σ = 1773857448. Its totient is φ = 369909760.

The previous prime is 813807089. The next prime is 813807131. The reversal of 813807104 is 401708318.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66617 + ... + 77880.

Almost surely, 2^813807104 is an apocalyptic number.

It is an amenable number.

813807104 is an abundant number, since it is smaller than the sum of its proper divisors (960050344).

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

813807104 is a wasteful number, since it uses less digits than its factorization.

813807104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144526 (or 144510 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 813807104 is about 28527.3045344281. The cubic root of 813807104 is about 933.6279088314.

The spelling of 813807104 in words is "eight hundred thirteen million, eight hundred seven thousand, one hundred four".