23126566 has 4 divisors (see below), whose sum is σ = 34689852. Its totient is φ = 11563282.

The previous prime is 23126557. The next prime is 23126627. The reversal of 23126566 is 66562132.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5781640 + ... + 5781643.

It is an arithmetic number, because the mean of its divisors is an integer number (8672463).

Almost surely, 2^23126566 is an apocalyptic number.

23126566 is a deficient number, since it is larger than the sum of its proper divisors (11563286).

23126566 is a wasteful number, since it uses less digits than its factorization.

23126566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11563285.

The product of its digits is 12960, while the sum is 31.

The square root of 23126566 is about 4809.0088375881. The cubic root of 23126566 is about 284.9073916818.

Adding to 23126566 its reverse (66562132), we get a palindrome (89688698).

The spelling of 23126566 in words is "twenty-three million, one hundred twenty-six thousand, five hundred sixty-six".