72168308 has 12 divisors (see below), whose sum is σ = 132941760. Its totient is φ = 34184952.

The previous prime is 72168301. The next prime is 72168329. The reversal of 72168308 is 80386127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72168301) 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 3 ways as a sum of consecutive naturals, for example, 474716 + ... + 474867.

It is an arithmetic number, because the mean of its divisors is an integer number (11078480).

Almost surely, 2^72168308 is an apocalyptic number.

It is an amenable number.

72168308 is a deficient number, since it is larger than the sum of its proper divisors (60773452).

72168308 is a wasteful number, since it uses less digits than its factorization.

72168308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949606 (or 949604 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 72168308 is about 8495.1932291149. The cubic root of 72168308 is about 416.3406741536.

The spelling of 72168308 in words is "seventy-two million, one hundred sixty-eight thousand, three hundred eight".