72218333 has 8 divisors (see below), whose sum is σ = 79564896. Its totient is φ = 65002000.

The previous prime is 72218309. The next prime is 72218353. The reversal of 72218333 is 33381227.

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

It is a cyclic number.

It is not a de Polignac number, because 72218333 - 2⁶ = 72218269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72218296 and 72218305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72218353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31391 + ... + 33612.

It is an arithmetic number, because the mean of its divisors is an integer number (9945612).

Almost surely, 2^72218333 is an apocalyptic number.

It is an amenable number.

72218333 is a deficient number, since it is larger than the sum of its proper divisors (7346563).

72218333 is a wasteful number, since it uses less digits than its factorization.

72218333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65115.

The product of its digits is 6048, while the sum is 29.

The square root of 72218333 is about 8498.1370311381. The cubic root of 72218333 is about 416.4368504038.

The spelling of 72218333 in words is "seventy-two million, two hundred eighteen thousand, three hundred thirty-three".