72039223 has 4 divisors (see below), whose sum is σ = 72221080. Its totient is φ = 71857368.

The previous prime is 72039221. The next prime is 72039229. The reversal of 72039223 is 32293027.

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 72039223 - 2¹ = 72039221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72039191 and 72039200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72039221) 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, 90333 + ... + 91126.

It is an arithmetic number, because the mean of its divisors is an integer number (18055270).

Almost surely, 2^72039223 is an apocalyptic number.

72039223 is a deficient number, since it is larger than the sum of its proper divisors (181857).

72039223 is a wasteful number, since it uses less digits than its factorization.

72039223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181856.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 72039223 is about 8487.5922969945. The cubic root of 72039223 is about 416.0922945336.

The spelling of 72039223 in words is "seventy-two million, thirty-nine thousand, two hundred twenty-three".