172334720 has 64 divisors (see below), whose sum is σ = 418240800. Its totient is φ = 67888128.

The previous prime is 172334717. The next prime is 172334749. The reversal of 172334720 is 27433271.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40871 + ... + 44889.

Almost surely, 2^172334720 is an apocalyptic number.

172334720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172334720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209120400).

172334720 is an abundant number, since it is smaller than the sum of its proper divisors (245906080).

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

172334720 is an equidigital number, since it uses as much as digits as its factorization.

172334720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4105 (or 4093 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 172334720 is about 13127.6319265890. The cubic root of 172334720 is about 556.4902943624.

Adding to 172334720 its reverse (27433271), we get a palindrome (199767991).

The spelling of 172334720 in words is "one hundred seventy-two million, three hundred thirty-four thousand, seven hundred twenty".