168272345 has 4 divisors (see below), whose sum is σ = 201926820. Its totient is φ = 134617872.

The previous prime is 168272339. The next prime is 168272369. The reversal of 168272345 is 543272861.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34199104 + 134073241 = 5848^2 + 11579^2 .

It is a cyclic number.

It is not a de Polignac number, because 168272345 - 2⁸ = 168272089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168272299 and 168272308.

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, 16827230 + ... + 16827239.

It is an arithmetic number, because the mean of its divisors is an integer number (50481705).

Almost surely, 2^168272345 is an apocalyptic number.

It is an amenable number.

168272345 is a deficient number, since it is larger than the sum of its proper divisors (33654475).

168272345 is an equidigital number, since it uses as much as digits as its factorization.

168272345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33654474.

The product of its digits is 80640, while the sum is 38.

The square root of 168272345 is about 12971.9830789282. The cubic root of 168272345 is about 552.0828406530.

The spelling of 168272345 in words is "one hundred sixty-eight million, two hundred seventy-two thousand, three hundred forty-five".