802312180 has 12 divisors (see below), whose sum is σ = 1684855620. Its totient is φ = 320924864.

The previous prime is 802312171. The next prime is 802312193. The reversal of 802312180 is 81213208.

It can be written as a sum of positive squares in 2 ways, for example, as 495151504 + 307160676 = 22252^2 + 17526^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20057785 + ... + 20057824.

It is an arithmetic number, because the mean of its divisors is an integer number (140404635).

Almost surely, 2^802312180 is an apocalyptic number.

It is an amenable number.

802312180 is an abundant number, since it is smaller than the sum of its proper divisors (882543440).

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

802312180 is a wasteful number, since it uses less digits than its factorization.

802312180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40115618 (or 40115616 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 802312180 is about 28325.1157102667. The cubic root of 802312180 is about 929.2112555525.

Adding to 802312180 its reverse (81213208), we get a palindrome (883525388).

The spelling of 802312180 in words is "eight hundred two million, three hundred twelve thousand, one hundred eighty".