85180872 has 32 divisors (see below), whose sum is σ = 243374400. Its totient is φ = 24337344.

The previous prime is 85180867. The next prime is 85180877. The reversal of 85180872 is 27808158.

It is an interprime number because it is at equal distance from previous prime (85180867) and next prime (85180877).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 85180872.

It is not an unprimeable number, because it can be changed into a prime (85180877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253347 + ... + 253682.

It is an arithmetic number, because the mean of its divisors is an integer number (7605450).

Almost surely, 2^85180872 is an apocalyptic number.

It is an amenable number.

85180872 is an abundant number, since it is smaller than the sum of its proper divisors (158193528).

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

85180872 is a wasteful number, since it uses less digits than its factorization.

85180872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507045 (or 507041 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 85180872 is about 9229.3484060360. The cubic root of 85180872 is about 439.9946142591.

The spelling of 85180872 in words is "eighty-five million, one hundred eighty thousand, eight hundred seventy-two".