172204830 has 96 divisors (see below), whose sum is σ = 520198848. Its totient is φ = 38707200.

The previous prime is 172204819. The next prime is 172204853. The reversal of 172204830 is 38402271.

It is a junction number, because it is equal to n+sod(n) for n = 172204794 and 172204803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36190 + ... + 40670.

It is an arithmetic number, because the mean of its divisors is an integer number (5418738).

Almost surely, 2^172204830 is an apocalyptic number.

172204830 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 172204830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260099424).

172204830 is an abundant number, since it is smaller than the sum of its proper divisors (347994018).

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

172204830 is a wasteful number, since it uses less digits than its factorization.

172204830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4562 (or 4559 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 172204830 is about 13122.6837956266. The cubic root of 172204830 is about 556.3504488882.

The spelling of 172204830 in words is "one hundred seventy-two million, two hundred four thousand, eight hundred thirty".