72297023 has 4 divisors (see below), whose sum is σ = 72372000. Its totient is φ = 72222048.

The previous prime is 72297013. The next prime is 72297037. The reversal of 72297023 is 32079227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32079227 = 23 ⋅1394749.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72297023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72297013) 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, 36023 + ... + 37976.

It is an arithmetic number, because the mean of its divisors is an integer number (18093000).

Almost surely, 2^72297023 is an apocalyptic number.

72297023 is a deficient number, since it is larger than the sum of its proper divisors (74977).

72297023 is an equidigital number, since it uses as much as digits as its factorization.

72297023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74976.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 72297023 is about 8502.7656089063. The cubic root of 72297023 is about 416.5880471042.

The spelling of 72297023 in words is "seventy-two million, two hundred ninety-seven thousand, twenty-three".