804228156 has 24 divisors (see below), whose sum is σ = 2085036240. Its totient is φ = 268076016.

The previous prime is 804228151. The next prime is 804228167. The reversal of 804228156 is 651822408.

804228156 is a `hidden beast` number, since 80 + 422 + 8 + 156 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 804228156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804228151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3723171 + ... + 3723386.

It is an arithmetic number, because the mean of its divisors is an integer number (86876510).

Almost surely, 2^804228156 is an apocalyptic number.

It is an amenable number.

804228156 is an abundant number, since it is smaller than the sum of its proper divisors (1280808084).

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

804228156 is a wasteful number, since it uses less digits than its factorization.

804228156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7446570 (or 7446562 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 804228156 is about 28358.9166929909. The cubic root of 804228156 is about 929.9503407407.

The spelling of 804228156 in words is "eight hundred four million, two hundred twenty-eight thousand, one hundred fifty-six".