72943219 has 4 divisors (see below), whose sum is σ = 72976720. Its totient is φ = 72909720.

The previous prime is 72943187. The next prime is 72943231. The reversal of 72943219 is 91234927.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72943219 - 2⁵ = 72943187 is a prime.

It is a super-2 number, since 2×72943219² = 10641426396163922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72943249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13239 + ... + 17920.

It is an arithmetic number, because the mean of its divisors is an integer number (18244180).

Almost surely, 2^72943219 is an apocalyptic number.

72943219 is a deficient number, since it is larger than the sum of its proper divisors (33501).

72943219 is a wasteful number, since it uses less digits than its factorization.

72943219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33500.

The product of its digits is 27216, while the sum is 37.

The square root of 72943219 is about 8540.6802422290. The cubic root of 72943219 is about 417.8255321436.

The spelling of 72943219 in words is "seventy-two million, nine hundred forty-three thousand, two hundred nineteen".