872040278 has 4 divisors (see below), whose sum is σ = 1308060420. Its totient is φ = 436020138.

The previous prime is 872040277. The next prime is 872040287.

872040278 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872040277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218010068 + ... + 218010071.

It is an arithmetic number, because the mean of its divisors is an integer number (327015105).

Almost surely, 2^872040278 is an apocalyptic number.

872040278 is a deficient number, since it is larger than the sum of its proper divisors (436020142).

872040278 is a wasteful number, since it uses less digits than its factorization.

872040278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436020141.

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 872040278 is about 29530.3281051870. The cubic root of 872040278 is about 955.3859456299.

The spelling of 872040278 in words is "eight hundred seventy-two million, forty thousand, two hundred seventy-eight".