23272729 has 2 divisors, whose sum is σ = 23272730. Its totient is φ = 23272728.

The previous prime is 23272693. The next prime is 23272751. The reversal of 23272729 is 92727232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15721225 + 7551504 = 3965^2 + 2748^2 .

It is a cyclic number.

It is not a de Polignac number, because 23272729 - 2⁹ = 23272217 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 23272694 and 23272703.

It is not a weakly prime, because it can be changed into another prime (23272759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11636364 + 11636365.

It is an arithmetic number, because the mean of its divisors is an integer number (11636365).

Almost surely, 2^23272729 is an apocalyptic number.

It is an amenable number.

23272729 is a deficient number, since it is larger than the sum of its proper divisors (1).

23272729 is an equidigital number, since it uses as much as digits as its factorization.

23272729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 34.

The square root of 23272729 is about 4824.1816922666. The cubic root of 23272729 is about 285.5063492648.

The spelling of 23272729 in words is "twenty-three million, two hundred seventy-two thousand, seven hundred twenty-nine".