23888729 has 2 divisors, whose sum is σ = 23888730. Its totient is φ = 23888728.

The previous prime is 23888707. The next prime is 23888771. The reversal of 23888729 is 92788832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13520329 + 10368400 = 3677^2 + 3220^2 .

It is a cyclic number.

It is not a de Polignac number, because 23888729 - 2¹² = 23884633 is a prime.

It is not a weakly prime, because it can be changed into another prime (23888129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11944364 + 11944365.

It is an arithmetic number, because the mean of its divisors is an integer number (11944365).

Almost surely, 2^23888729 is an apocalyptic number.

It is an amenable number.

23888729 is a deficient number, since it is larger than the sum of its proper divisors (1).

23888729 is an equidigital number, since it uses as much as digits as its factorization.

23888729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 47.

The square root of 23888729 is about 4887.6097430134. The cubic root of 23888729 is about 288.0034440496.

The spelling of 23888729 in words is "twenty-three million, eight hundred eighty-eight thousand, seven hundred twenty-nine".