872137044 has 30 divisors (see below), whose sum is σ = 2279939354. Its totient is φ = 290712240.

The previous prime is 872137033. The next prime is 872137087. The reversal of 872137044 is 440731278.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 626901444 + 245235600 = 25038^2 + 15660^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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 9 ways as a sum of consecutive naturals, for example, 1345567 + ... + 1346214.

Almost surely, 2^872137044 is an apocalyptic number.

It is an amenable number.

872137044 is an abundant number, since it is smaller than the sum of its proper divisors (1407802310).

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

872137044 is a wasteful number, since it uses less digits than its factorization.

872137044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691797 (or 2691786 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 872137044 is about 29531.9664770228. The cubic root of 872137044 is about 955.4212824751.

The spelling of 872137044 in words is "eight hundred seventy-two million, one hundred thirty-seven thousand, forty-four".