23243857 has 16 divisors (see below), whose sum is σ = 29008000. Its totient is φ = 18133632.

The previous prime is 23243849. The next prime is 23243929. The reversal of 23243857 is 75834232.

It is a cyclic number.

It is not a de Polignac number, because 23243857 - 2³ = 23243849 is a prime.

It is a super-5 number, since 5×23243857⁵ (a number of 38 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (23243827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4894 + ... + 8392.

It is an arithmetic number, because the mean of its divisors is an integer number (1813000).

Almost surely, 2^23243857 is an apocalyptic number.

It is an amenable number.

23243857 is a deficient number, since it is larger than the sum of its proper divisors (5764143).

23243857 is a wasteful number, since it uses less digits than its factorization.

23243857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3592.

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

The square root of 23243857 is about 4821.1883389886. The cubic root of 23243857 is about 285.3882346185.

The spelling of 23243857 in words is "twenty-three million, two hundred forty-three thousand, eight hundred fifty-seven".