23243785 has 4 divisors (see below), whose sum is σ = 27892548. Its totient is φ = 18595024.

The previous prime is 23243771. The next prime is 23243791. The reversal of 23243785 is 58734232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15155449 + 8088336 = 3893^2 + 2844^2 .

It is a cyclic number.

It is not a de Polignac number, because 23243785 - 2⁷ = 23243657 is a prime.

It is a super-2 number, since 2×23243785² = 1080547082252450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23243785.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2324374 + ... + 2324383.

It is an arithmetic number, because the mean of its divisors is an integer number (6973137).

Almost surely, 2^23243785 is an apocalyptic number.

It is an amenable number.

23243785 is a deficient number, since it is larger than the sum of its proper divisors (4648763).

23243785 is an equidigital number, since it uses as much as digits as its factorization.

23243785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4648762.

The product of its digits is 40320, while the sum is 34.

The square root of 23243785 is about 4821.1808719441. The cubic root of 23243785 is about 285.3879399460.

The spelling of 23243785 in words is "twenty-three million, two hundred forty-three thousand, seven hundred eighty-five".