172513280 has 96 divisors (see below), whose sum is σ = 438721920. Its totient is φ = 64880640.

The previous prime is 172513267. The next prime is 172513283. The reversal of 172513280 is 82315271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172513283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173585 + ... + 174575.

It is an arithmetic number, because the mean of its divisors is an integer number (4570020).

Almost surely, 2^172513280 is an apocalyptic number.

172513280 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 172513280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219360960).

172513280 is an abundant number, since it is smaller than the sum of its proper divisors (266208640).

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

172513280 is an equidigital number, since it uses as much as digits as its factorization.

172513280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035 (or 1015 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 172513280 is about 13134.4310877936. The cubic root of 172513280 is about 556.6824255203.

The spelling of 172513280 in words is "one hundred seventy-two million, five hundred thirteen thousand, two hundred eighty".