23720769 has 10 divisors (see below), whose sum is σ = 35434850. Its totient is φ = 15813792.

The previous prime is 23720761. The next prime is 23720789. The reversal of 23720769 is 96702732.

It can be written as a sum of positive squares in only one way, i.e., 20250000 + 3470769 = 4500^2 + 1863^2 .

It is not a de Polignac number, because 23720769 - 2³ = 23720761 is a prime.

It is a super-2 number, since 2×23720769² = 1125349763902722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23720761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 146344 + ... + 146505.

It is an arithmetic number, because the mean of its divisors is an integer number (3543485).

Almost surely, 2^23720769 is an apocalyptic number.

It is an amenable number.

23720769 is a deficient number, since it is larger than the sum of its proper divisors (11714081).

23720769 is an equidigital number, since it uses as much as digits as its factorization.

23720769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292861 (or 292852 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 23720769 is about 4870.3972117272. The cubic root of 23720769 is about 287.3268785085.

The spelling of 23720769 in words is "twenty-three million, seven hundred twenty thousand, seven hundred sixty-nine".