872045320 has 16 divisors (see below), whose sum is σ = 1962102060. Its totient is φ = 348818112.

The previous prime is 872045303. The next prime is 872045333. The reversal of 872045320 is 23540278.

It can be written as a sum of positive squares in 2 ways, for example, as 731053444 + 140991876 = 27038^2 + 11874^2 .

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, 10900527 + ... + 10900606.

Almost surely, 2^872045320 is an apocalyptic number.

It is an amenable number.

872045320 is an abundant number, since it is smaller than the sum of its proper divisors (1090056740).

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

872045320 is a wasteful number, since it uses less digits than its factorization.

872045320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21801144 (or 21801140 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 872045320 is about 29530.4134749245. The cubic root of 872045320 is about 955.3877869235.

Adding to 872045320 its reverse (23540278), we get a palindrome (895585598).

The spelling of 872045320 in words is "eight hundred seventy-two million, forty-five thousand, three hundred twenty".