872782244 has 12 divisors (see below), whose sum is σ = 1617214284. Its totient is φ = 410721024.

The previous prime is 872782243. The next prime is 872782279. The reversal of 872782244 is 442287278.

It can be written as a sum of positive squares in 2 ways, for example, as 347822500 + 524959744 = 18650^2 + 22912^2 .

It is a junction number, because it is equal to n+sod(n) for n = 872782195 and 872782204.

It is not an unprimeable number, because it can be changed into a prime (872782241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6417449 + ... + 6417584.

It is an arithmetic number, because the mean of its divisors is an integer number (134767857).

Almost surely, 2^872782244 is an apocalyptic number.

It is an amenable number.

872782244 is a deficient number, since it is larger than the sum of its proper divisors (744432040).

872782244 is a wasteful number, since it uses less digits than its factorization.

872782244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12835054 (or 12835052 counting only the distinct ones).

The product of its digits is 401408, while the sum is 44.

The square root of 872782244 is about 29542.8882135786. Note that the first 3 decimals coincide. The cubic root of 872782244 is about 955.6568287371.

The spelling of 872782244 in words is "eight hundred seventy-two million, seven hundred eighty-two thousand, two hundred forty-four".