872021162 has 8 divisors (see below), whose sum is σ = 1309025892. Its totient is φ = 435679200.

The previous prime is 872021153. The next prime is 872021167. The reversal of 872021162 is 261120278.

It can be written as a sum of positive squares in 2 ways, for example, as 866772481 + 5248681 = 29441^2 + 2291^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (872021167) 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, 162389 + ... + 167672.

Almost surely, 2^872021162 is an apocalyptic number.

872021162 is a deficient number, since it is larger than the sum of its proper divisors (437004730).

872021162 is a wasteful number, since it uses less digits than its factorization.

872021162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331384.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 872021162 is about 29530.0044361663. The cubic root of 872021162 is about 955.3789645719.

The spelling of 872021162 in words is "eight hundred seventy-two million, twenty-one thousand, one hundred sixty-two".