72243319 has 8 divisors (see below), whose sum is σ = 76629888. Its totient is φ = 67872000.

The previous prime is 72243307. The next prime is 72243323. The reversal of 72243319 is 91334227.

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 72243319 - 2⁵ = 72243287 is a prime.

It is a super-2 number, since 2×72243319² = 10438194280271522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72243329) 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, 6819 + ... + 13819.

It is an arithmetic number, because the mean of its divisors is an integer number (9578736).

Almost surely, 2^72243319 is an apocalyptic number.

72243319 is a deficient number, since it is larger than the sum of its proper divisors (4386569).

72243319 is a wasteful number, since it uses less digits than its factorization.

72243319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7625.

The product of its digits is 9072, while the sum is 31.

The square root of 72243319 is about 8499.6069909143. The cubic root of 72243319 is about 416.4848709501.

The spelling of 72243319 in words is "seventy-two million, two hundred forty-three thousand, three hundred nineteen".