872787534 has 24 divisors (see below), whose sum is σ = 1842287400. Its totient is φ = 275616432.

The previous prime is 872787529. The next prime is 872787557. The reversal of 872787534 is 435787278.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199309 + ... + 203640.

It is an arithmetic number, because the mean of its divisors is an integer number (76761975).

Almost surely, 2^872787534 is an apocalyptic number.

872787534 is an abundant number, since it is smaller than the sum of its proper divisors (969499866).

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

872787534 is a wasteful number, since it uses less digits than its factorization.

872787534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402992 (or 402973 counting only the distinct ones).

The product of its digits is 2634240, while the sum is 51.

The square root of 872787534 is about 29542.9777442965. The cubic root of 872787534 is about 955.6587595029.

The spelling of 872787534 in words is "eight hundred seventy-two million, seven hundred eighty-seven thousand, five hundred thirty-four".