23252809 has 12 divisors (see below), whose sum is σ = 24680656. Its totient is φ = 21894768.

The previous prime is 23252807. The next prime is 23252813. The reversal of 23252809 is 90825232.

It is not a de Polignac number, because 23252809 - 2¹ = 23252807 is a prime.

It is a super-3 number, since 3×23252809³ (a number of 23 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23252807) 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 11 ways as a sum of consecutive naturals, for example, 35842 + ... + 36484.

Almost surely, 2^23252809 is an apocalyptic number.

23252809 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

23252809 is a deficient number, since it is larger than the sum of its proper divisors (1427847).

23252809 is an equidigital number, since it uses as much as digits as its factorization.

23252809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 715 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 23252809 is about 4822.1166514302. The cubic root of 23252809 is about 285.4248674883.

The spelling of 23252809 in words is "twenty-three million, two hundred fifty-two thousand, eight hundred nine".