23728769 has 2 divisors, whose sum is σ = 23728770. Its totient is φ = 23728768.

The previous prime is 23728763. The next prime is 23728799. The reversal of 23728769 is 96782732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15249025 + 8479744 = 3905^2 + 2912^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23728769 is a prime.

It is a super-2 number, since 2×23728769² = 1126108956510722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23728763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11864384 + 11864385.

It is an arithmetic number, because the mean of its divisors is an integer number (11864385).

Almost surely, 2^23728769 is an apocalyptic number.

It is an amenable number.

23728769 is a deficient number, since it is larger than the sum of its proper divisors (1).

23728769 is an equidigital number, since it uses as much as digits as its factorization.

23728769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 44.

The square root of 23728769 is about 4871.2184307419. The cubic root of 23728769 is about 287.3591758969.

The spelling of 23728769 in words is "twenty-three million, seven hundred twenty-eight thousand, seven hundred sixty-nine".