72858871 has 8 divisors (see below), whose sum is σ = 76883040. Its totient is φ = 68906112.

The previous prime is 72858857. The next prime is 72858887. The reversal of 72858871 is 17885827.

It is a happy number.

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 72858871 - 2²⁵ = 39304439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72858371) 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, 15750 + ... + 19843.

It is an arithmetic number, because the mean of its divisors is an integer number (9610380).

Almost surely, 2^72858871 is an apocalyptic number.

72858871 is a deficient number, since it is larger than the sum of its proper divisors (4024169).

72858871 is a wasteful number, since it uses less digits than its factorization.

72858871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35705.

The product of its digits is 250880, while the sum is 46.

The square root of 72858871 is about 8535.7407997197. The cubic root of 72858871 is about 417.6644189675.

The spelling of 72858871 in words is "seventy-two million, eight hundred fifty-eight thousand, eight hundred seventy-one".