172801330 has 16 divisors (see below), whose sum is σ = 334968984. Its totient is φ = 63803520.

The previous prime is 172801327. The next prime is 172801381. The reversal of 172801330 is 33108271.

172801330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 95238081 + 77563249 = 9759^2 + 8807^2 .

It is a junction number, because it is equal to n+sod(n) for n = 172801295 and 172801304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664491 + ... + 664750.

Almost surely, 2^172801330 is an apocalyptic number.

172801330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172801330 is a deficient number, since it is larger than the sum of its proper divisors (162167654).

172801330 is a wasteful number, since it uses less digits than its factorization.

172801330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329261.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 172801330 is about 13145.3919682906. The cubic root of 172801330 is about 556.9920890375.

The spelling of 172801330 in words is "one hundred seventy-two million, eight hundred one thousand, three hundred thirty".