72568218 has 8 divisors (see below), whose sum is σ = 145136448. Its totient is φ = 24189404.

The previous prime is 72568217. The next prime is 72568231. The reversal of 72568218 is 81286527.

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

72568218 is an admirable number.

It is a super-2 number, since 2×72568218² = 10532292527391048, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72568213) 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, 6047346 + ... + 6047357.

It is an arithmetic number, because the mean of its divisors is an integer number (18142056).

Almost surely, 2^72568218 is an apocalyptic number.

72568218 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72568218 is a wasteful number, since it uses less digits than its factorization.

72568218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12094708.

The product of its digits is 53760, while the sum is 39.

The square root of 72568218 is about 8518.6981399742. The cubic root of 72568218 is about 417.1082881016.

The spelling of 72568218 in words is "seventy-two million, five hundred sixty-eight thousand, two hundred eighteen".