807800220 has 144 divisors (see below), whose sum is σ = 2684223360. Its totient is φ = 195729408.

The previous prime is 807800179. The next prime is 807800251. The reversal of 807800220 is 22008708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84189 + ... + 93291.

It is an arithmetic number, because the mean of its divisors is an integer number (18640440).

Almost surely, 2^807800220 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 807800220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1342111680).

807800220 is an abundant number, since it is smaller than the sum of its proper divisors (1876423140).

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

807800220 is a wasteful number, since it uses less digits than its factorization.

807800220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9164 (or 9159 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 807800220 is about 28421.8264719212. The cubic root of 807800220 is about 931.3251314247.

Adding to 807800220 its reverse (22008708), we get a palindrome (829808928).

The spelling of 807800220 in words is "eight hundred seven million, eight hundred thousand, two hundred twenty".