872278385 has 32 divisors (see below), whose sum is σ = 1185408000. Its totient is φ = 610364160.

The previous prime is 872278357. The next prime is 872278397. The reversal of 872278385 is 583872278.

It is not a de Polignac number, because 872278385 - 2⁸ = 872278129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 555872 + ... + 557438.

It is an arithmetic number, because the mean of its divisors is an integer number (37044000).

Almost surely, 2^872278385 is an apocalyptic number.

It is an amenable number.

872278385 is a deficient number, since it is larger than the sum of its proper divisors (313129615).

872278385 is a wasteful number, since it uses less digits than its factorization.

872278385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961.

The product of its digits is 1505280, while the sum is 50.

The square root of 872278385 is about 29534.3593971496. The cubic root of 872278385 is about 955.4728924471.

The spelling of 872278385 in words is "eight hundred seventy-two million, two hundred seventy-eight thousand, three hundred eighty-five".