804207220 has 12 divisors (see below), whose sum is σ = 1688835204. Its totient is φ = 321682880.

The previous prime is 804207203. The next prime is 804207233. The reversal of 804207220 is 22702408.

It can be written as a sum of positive squares in 2 ways, for example, as 412008804 + 392198416 = 20298^2 + 19804^2 .

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, 20105161 + ... + 20105200.

It is an arithmetic number, because the mean of its divisors is an integer number (140736267).

Almost surely, 2^804207220 is an apocalyptic number.

It is an amenable number.

804207220 is an abundant number, since it is smaller than the sum of its proper divisors (884627984).

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

804207220 is a wasteful number, since it uses less digits than its factorization.

804207220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40210370 (or 40210368 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 804207220 is about 28358.5475650640. The cubic root of 804207220 is about 929.9422710534.

Adding to 804207220 its reverse (22702408), we get a palindrome (826909628).

The spelling of 804207220 in words is "eight hundred four million, two hundred seven thousand, two hundred twenty".