23623729 has 2 divisors, whose sum is σ = 23623730. Its totient is φ = 23623728.

The previous prime is 23623687. The next prime is 23623741. The reversal of 23623729 is 92732632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13126129 + 10497600 = 3623^2 + 3240^2 .

It is a cyclic number.

It is not a de Polignac number, because 23623729 - 2⁷ = 23623601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23623694 and 23623703.

It is not a weakly prime, because it can be changed into another prime (23623129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11811864 + 11811865.

It is an arithmetic number, because the mean of its divisors is an integer number (11811865).

Almost surely, 2^23623729 is an apocalyptic number.

It is an amenable number.

23623729 is a deficient number, since it is larger than the sum of its proper divisors (1).

23623729 is an equidigital number, since it uses as much as digits as its factorization.

23623729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 34.

The square root of 23623729 is about 4860.4247756755. The cubic root of 23623729 is about 286.9345316399.

The spelling of 23623729 in words is "twenty-three million, six hundred twenty-three thousand, seven hundred twenty-nine".