72228885 has 8 divisors (see below), whose sum is σ = 115566240. Its totient is φ = 38522064.

The previous prime is 72228883. The next prime is 72228913. The reversal of 72228885 is 58882227.

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

It is not a de Polignac number, because 72228885 - 2¹ = 72228883 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72228883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2407615 + ... + 2407644.

It is an arithmetic number, because the mean of its divisors is an integer number (14445780).

Almost surely, 2^72228885 is an apocalyptic number.

It is an amenable number.

72228885 is a deficient number, since it is larger than the sum of its proper divisors (43337355).

72228885 is a wasteful number, since it uses less digits than its factorization.

72228885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4815267.

The product of its digits is 143360, while the sum is 42.

The square root of 72228885 is about 8498.7578504156. The cubic root of 72228885 is about 416.4571316236.

The spelling of 72228885 in words is "seventy-two million, two hundred twenty-eight thousand, eight hundred eighty-five".