72226618 has 8 divisors (see below), whose sum is σ = 108413280. Its totient is φ = 36088860.

The previous prime is 72226613. The next prime is 72226631. The reversal of 72226618 is 81662227.

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

It is not an unprimeable number, because it can be changed into a prime (72226613) 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, 8278 + ... + 14593.

It is an arithmetic number, because the mean of its divisors is an integer number (13551660).

Almost surely, 2^72226618 is an apocalyptic number.

72226618 is a deficient number, since it is larger than the sum of its proper divisors (36186662).

72226618 is a wasteful number, since it uses less digits than its factorization.

72226618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24452.

The product of its digits is 16128, while the sum is 34.

The square root of 72226618 is about 8498.6244769374. The cubic root of 72226618 is about 416.4527745570.

The spelling of 72226618 in words is "seventy-two million, two hundred twenty-six thousand, six hundred eighteen".