172001872200 has 48 divisors (see below), whose sum is σ = 533205805680. Its totient is φ = 45867165760.

The previous prime is 172001872193. The next prime is 172001872243. The reversal of 172001872200 is 2278100271.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 143334294 + ... + 143335493.

It is an arithmetic number, because the mean of its divisors is an integer number (11108454285).

Almost surely, 2^172001872200 is an apocalyptic number.

172001872200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172001872200 is an abundant number, since it is smaller than the sum of its proper divisors (361203933480).

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

172001872200 is a wasteful number, since it uses less digits than its factorization.

172001872200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286669806 (or 286669797 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

Adding to 172001872200 its reverse (2278100271), we get a palindrome (174279972471).

The spelling of 172001872200 in words is "one hundred seventy-two billion, one million, eight hundred seventy-two thousand, two hundred".