172028017230 has 256 divisors, whose sum is σ = 466298726400. Its totient is φ = 40412528640.

The previous prime is 172028017223. The next prime is 172028017241. The reversal of 172028017230 is 32710820271.

It is a junction number, because it is equal to n+sod(n) for n = 172028017191 and 172028017200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 71172982 + ... + 71175398.

It is an arithmetic number, because the mean of its divisors is an integer number (1821479400).

Almost surely, 2^172028017230 is an apocalyptic number.

172028017230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 172028017230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233149363200).

172028017230 is an abundant number, since it is smaller than the sum of its proper divisors (294270709170).

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

172028017230 is a wasteful number, since it uses less digits than its factorization.

172028017230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619.

The product of its (nonzero) digits is 9408, while the sum is 33.

The spelling of 172028017230 in words is "one hundred seventy-two billion, twenty-eight million, seventeen thousand, two hundred thirty".