86172380 has 36 divisors (see below), whose sum is σ = 210509208. Its totient is φ = 29544480.

The previous prime is 86172379. The next prime is 86172389. The reversal of 86172380 is 8327168.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 86172380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86172389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42986 + ... + 44945.

It is an arithmetic number, because the mean of its divisors is an integer number (5847478).

Almost surely, 2^86172380 is an apocalyptic number.

It is an amenable number.

86172380 is an abundant number, since it is smaller than the sum of its proper divisors (124336828).

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

86172380 is a wasteful number, since it uses less digits than its factorization.

86172380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87954 (or 87945 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 86172380 is about 9282.9079495598. The cubic root of 86172380 is about 441.6952165398.

The spelling of 86172380 in words is "eighty-six million, one hundred seventy-two thousand, three hundred eighty".