872021873 has 8 divisors (see below), whose sum is σ = 876355200. Its totient is φ = 867697168.

The previous prime is 872021867. The next prime is 872021893. The reversal of 872021873 is 378120278.

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

It is a cyclic number.

It is not a de Polignac number, because 872021873 - 2⁸ = 872021617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872021893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295238 + ... + 298176.

It is an arithmetic number, because the mean of its divisors is an integer number (109544400).

Almost surely, 2^872021873 is an apocalyptic number.

It is an amenable number.

872021873 is a deficient number, since it is larger than the sum of its proper divisors (4333327).

872021873 is a wasteful number, since it uses less digits than its factorization.

872021873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4311.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 872021873 is about 29530.0164747668. The cubic root of 872021873 is about 955.3792242270.

The spelling of 872021873 in words is "eight hundred seventy-two million, twenty-one thousand, eight hundred seventy-three".