72219323 has 8 divisors (see below), whose sum is σ = 82931520. Its totient is φ = 62198280.

The previous prime is 72219319. The next prime is 72219353. The reversal of 72219323 is 32391227.

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 72219323 - 2² = 72219319 is a prime.

It is a super-2 number, since 2×72219323² = 10431261229156658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72219353) 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, 172565 + ... + 172982.

It is an arithmetic number, because the mean of its divisors is an integer number (10366440).

Almost surely, 2^72219323 is an apocalyptic number.

72219323 is a deficient number, since it is larger than the sum of its proper divisors (10712197).

72219323 is a wasteful number, since it uses less digits than its factorization.

72219323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345577.

The product of its digits is 4536, while the sum is 29.

The square root of 72219323 is about 8498.1952789989. The cubic root of 72219323 is about 416.4387532937.

The spelling of 72219323 in words is "seventy-two million, two hundred nineteen thousand, three hundred twenty-three".