872808278 has 8 divisors (see below), whose sum is σ = 1366134768. Its totient is φ = 417430024.

The previous prime is 872808269. The next prime is 872808311.

It is a happy number.

872808278 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9487001 + ... + 9487092.

It is an arithmetic number, because the mean of its divisors is an integer number (170766846).

Almost surely, 2^872808278 is an apocalyptic number.

872808278 is a deficient number, since it is larger than the sum of its proper divisors (493326490).

872808278 is a wasteful number, since it uses less digits than its factorization.

872808278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18974118.

The product of its (nonzero) digits is 802816, while the sum is 50.

The square root of 872808278 is about 29543.3288239494. The cubic root of 872808278 is about 955.6663306576. Note that the first 3 decimals are identical.

The spelling of 872808278 in words is "eight hundred seventy-two million, eight hundred eight thousand, two hundred seventy-eight".