872027172 has 36 divisors (see below), whose sum is σ = 2333956716. Its totient is φ = 273576960.

The previous prime is 872027171. The next prime is 872027197. The reversal of 872027172 is 271720278.

It can be written as a sum of positive squares in 2 ways, for example, as 789834816 + 82192356 = 28104^2 + 9066^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (872027171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 711829 + ... + 713052.

It is an arithmetic number, because the mean of its divisors is an integer number (64832131).

Almost surely, 2^872027172 is an apocalyptic number.

It is an amenable number.

872027172 is an abundant number, since it is smaller than the sum of its proper divisors (1461929544).

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

872027172 is a wasteful number, since it uses less digits than its factorization.

872027172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424908 (or 1424903 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 872027172 is about 29530.1061968968. The cubic root of 872027172 is about 955.3811594018.

The spelling of 872027172 in words is "eight hundred seventy-two million, twenty-seven thousand, one hundred seventy-two".