172206293 has 8 divisors (see below), whose sum is σ = 197306112. Its totient is φ = 147231216.

The previous prime is 172206257. The next prime is 172206319. The reversal of 172206293 is 392602271.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172206293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172206193) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 28205 + ... + 33762.

It is an arithmetic number, because the mean of its divisors is an integer number (24663264).

Almost surely, 2^172206293 is an apocalyptic number.

It is an amenable number.

172206293 is a deficient number, since it is larger than the sum of its proper divisors (25099819).

172206293 is an equidigital number, since it uses as much as digits as its factorization.

172206293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62371.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 172206293 is about 13122.7395386787. The cubic root of 172206293 is about 556.3520244119.

The spelling of 172206293 in words is "one hundred seventy-two million, two hundred six thousand, two hundred ninety-three".