872989536 has 24 divisors (see below), whose sum is σ = 2291597784. Its totient is φ = 290996480.

The previous prime is 872989531. The next prime is 872989549. The reversal of 872989536 is 635989278.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×872989536² = 1524221459930990592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872989531) 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, 4546725 + ... + 4546916.

It is an arithmetic number, because the mean of its divisors is an integer number (95483241).

Almost surely, 2^872989536 is an apocalyptic number.

It is an amenable number.

872989536 is an abundant number, since it is smaller than the sum of its proper divisors (1418608248).

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

872989536 is a wasteful number, since it uses less digits than its factorization.

872989536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9093654 (or 9093646 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 57.

The square root of 872989536 is about 29546.3963284865. The cubic root of 872989536 is about 955.7324811828.

It can be divided in two parts, 8729895 and 36, that added together give a triangular number (8729931 = T₄₁₇₈).

The spelling of 872989536 in words is "eight hundred seventy-two million, nine hundred eighty-nine thousand, five hundred thirty-six".