172326530 has 8 divisors (see below), whose sum is σ = 310187772. Its totient is φ = 68930608.

The previous prime is 172326529. The next prime is 172326547. The reversal of 172326530 is 35623271.

It can be written as a sum of positive squares in 2 ways, for example, as 143736121 + 28590409 = 11989^2 + 5347^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 172326493 and 172326502.

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 3 ways as a sum of consecutive naturals, for example, 8616317 + ... + 8616336.

Almost surely, 2^172326530 is an apocalyptic number.

172326530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172326530 is a deficient number, since it is larger than the sum of its proper divisors (137861242).

172326530 is a wasteful number, since it uses less digits than its factorization.

172326530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17232660.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 172326530 is about 13127.3199854350. The cubic root of 172326530 is about 556.4814787124.

The spelling of 172326530 in words is "one hundred seventy-two million, three hundred twenty-six thousand, five hundred thirty".