172870330 has 8 divisors (see below), whose sum is σ = 311166612. Its totient is φ = 69148128.

The previous prime is 172870319. The next prime is 172870337. The reversal of 172870330 is 33078271.

It can be written as a sum of positive squares in 2 ways, for example, as 159845449 + 13024881 = 12643^2 + 3609^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 172870292 and 172870301.

It is not an unprimeable number, because it can be changed into a prime (172870337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8643507 + ... + 8643526.

Almost surely, 2^172870330 is an apocalyptic number.

172870330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172870330 is a deficient number, since it is larger than the sum of its proper divisors (138296282).

172870330 is a wasteful number, since it uses less digits than its factorization.

172870330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17287040.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 172870330 is about 13148.0162001726. The cubic root of 172870330 is about 557.0662152801.

The spelling of 172870330 in words is "one hundred seventy-two million, eight hundred seventy thousand, three hundred thirty".