172001380 has 24 divisors (see below), whose sum is σ = 363807360. Its totient is φ = 68304480.

The previous prime is 172001371. The next prime is 172001381. The reversal of 172001380 is 83100271.

It is not an unprimeable number, because it can be changed into a prime (172001381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28156 + ... + 33715.

It is an arithmetic number, because the mean of its divisors is an integer number (15158640).

Almost surely, 2^172001380 is an apocalyptic number.

172001380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172001380 is an abundant number, since it is smaller than the sum of its proper divisors (191805980).

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

172001380 is a wasteful number, since it uses less digits than its factorization.

172001380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62019 (or 62017 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 172001380 is about 13114.9296605052. The cubic root of 172001380 is about 556.1312639720.

The spelling of 172001380 in words is "one hundred seventy-two million, one thousand, three hundred eighty".