72224365 has 8 divisors (see below), whose sum is σ = 86738688. Its totient is φ = 57733200.

The previous prime is 72224351. The next prime is 72224371. The reversal of 72224365 is 56342227.

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

It is not a de Polignac number, because 72224365 - 2⁷ = 72224237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2040 + ... + 12190.

It is an arithmetic number, because the mean of its divisors is an integer number (10842336).

Almost surely, 2^72224365 is an apocalyptic number.

It is an amenable number.

72224365 is a deficient number, since it is larger than the sum of its proper divisors (14514323).

72224365 is a wasteful number, since it uses less digits than its factorization.

72224365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11579.

The product of its digits is 20160, while the sum is 31.

The square root of 72224365 is about 8498.4919250418. The cubic root of 72224365 is about 416.4484443073.

The spelling of 72224365 in words is "seventy-two million, two hundred twenty-four thousand, three hundred sixty-five".