72287223 has 16 divisors (see below), whose sum is σ = 99187200. Its totient is φ = 46800320.

The previous prime is 72287221. The next prime is 72287239. The reversal of 72287223 is 32278227.

It is a cyclic number.

It is not a de Polignac number, because 72287223 - 2¹ = 72287221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72287221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28168 + ... + 30626.

It is an arithmetic number, because the mean of its divisors is an integer number (6199200).

Almost surely, 2^72287223 is an apocalyptic number.

72287223 is a deficient number, since it is larger than the sum of its proper divisors (26899977).

72287223 is a wasteful number, since it uses less digits than its factorization.

72287223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742.

The product of its digits is 18816, while the sum is 33.

The square root of 72287223 is about 8502.1893062905. The cubic root of 72287223 is about 416.5692231510.

The spelling of 72287223 in words is "seventy-two million, two hundred eighty-seven thousand, two hundred twenty-three".