72247423 has 2 divisors, whose sum is σ = 72247424. Its totient is φ = 72247422.

The previous prime is 72247403. The next prime is 72247429. The reversal of 72247423 is 32474227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72247423 - 2¹⁷ = 72116351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72247429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36123711 + 36123712.

It is an arithmetic number, because the mean of its divisors is an integer number (36123712).

Almost surely, 2^72247423 is an apocalyptic number.

72247423 is a deficient number, since it is larger than the sum of its proper divisors (1).

72247423 is an equidigital number, since it uses as much as digits as its factorization.

72247423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18816, while the sum is 31.

The square root of 72247423 is about 8499.8484104130. The cubic root of 72247423 is about 416.4927573612.

The spelling of 72247423 in words is "seventy-two million, two hundred forty-seven thousand, four hundred twenty-three".