172219086 has 24 divisors (see below), whose sum is σ = 401845080. Its totient is φ = 52990416.

The previous prime is 172219067. The next prime is 172219093. The reversal of 172219086 is 680912271.

It is a self number, because there is not a number n which added to its sum of digits gives 172219086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 367756 + ... + 368223.

It is an arithmetic number, because the mean of its divisors is an integer number (16743545).

Almost surely, 2^172219086 is an apocalyptic number.

172219086 is an abundant number, since it is smaller than the sum of its proper divisors (229625994).

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

172219086 is a wasteful number, since it uses less digits than its factorization.

172219086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736000 (or 735997 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 172219086 is about 13123.2269659562. The cubic root of 172219086 is about 556.3658009801.

The spelling of 172219086 in words is "one hundred seventy-two million, two hundred nineteen thousand, eighty-six".