172450340 has 48 divisors (see below), whose sum is σ = 379037232. Its totient is φ = 65834496.

The previous prime is 172450337. The next prime is 172450349. The reversal of 172450340 is 43054271.

It can be written as a sum of positive squares in 8 ways, for example, as 11464996 + 160985344 = 3386^2 + 12688^2 .

It is a super-2 number, since 2×172450340² = 59478239532231200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172450349) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 37022 + ... + 41418.

It is an arithmetic number, because the mean of its divisors is an integer number (7896609).

Almost surely, 2^172450340 is an apocalyptic number.

172450340 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 172450340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189518616).

172450340 is an abundant number, since it is smaller than the sum of its proper divisors (206586892).

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

172450340 is a wasteful number, since it uses less digits than its factorization.

172450340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4496 (or 4494 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 172450340 is about 13132.0348765909. The cubic root of 172450340 is about 556.6147170058.

The spelling of 172450340 in words is "one hundred seventy-two million, four hundred fifty thousand, three hundred forty".