872407181 has 8 divisors (see below), whose sum is σ = 916370304. Its totient is φ = 828946800.

The previous prime is 872407171. The next prime is 872407183. The reversal of 872407181 is 181704278.

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 872407181 - 2⁶ = 872407117 is a prime.

It is a super-2 number, since 2×872407181² = 1522188578920733522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872407183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122126 + ... + 129071.

It is an arithmetic number, because the mean of its divisors is an integer number (114546288).

Almost surely, 2^872407181 is an apocalyptic number.

It is an amenable number.

872407181 is a deficient number, since it is larger than the sum of its proper divisors (43963123).

872407181 is a wasteful number, since it uses less digits than its factorization.

872407181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251371.

The product of its (nonzero) digits is 25088, while the sum is 38.

The square root of 872407181 is about 29536.5397601005. The cubic root of 872407181 is about 955.5199168193.

The spelling of 872407181 in words is "eight hundred seventy-two million, four hundred seven thousand, one hundred eighty-one".