804120912 has 160 divisors (see below), whose sum is σ = 2683161600. Its totient is φ = 225804672.

The previous prime is 804120901. The next prime is 804120913. The reversal of 804120912 is 219021408.

It is a super-2 number, since 2×804120912² = 1293220882231423488, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804120913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176163 + ... + 180669.

It is an arithmetic number, because the mean of its divisors is an integer number (16769760).

Almost surely, 2^804120912 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 804120912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1341580800).

804120912 is an abundant number, since it is smaller than the sum of its proper divisors (1879040688).

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

804120912 is a wasteful number, since it uses less digits than its factorization.

804120912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4590 (or 4578 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 804120912 is about 28357.0257960880. The cubic root of 804120912 is about 929.9090025429.

The spelling of 804120912 in words is "eight hundred four million, one hundred twenty thousand, nine hundred twelve".