23212766 has 4 divisors (see below), whose sum is σ = 34819152. Its totient is φ = 11606382.

The previous prime is 23212751. The next prime is 23212771. The reversal of 23212766 is 66721232.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5803190 + ... + 5803193.

It is an arithmetic number, because the mean of its divisors is an integer number (8704788).

Almost surely, 2^23212766 is an apocalyptic number.

23212766 is a deficient number, since it is larger than the sum of its proper divisors (11606386).

23212766 is a wasteful number, since it uses less digits than its factorization.

23212766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11606385.

The product of its digits is 6048, while the sum is 29.

The square root of 23212766 is about 4817.9628475114. The cubic root of 23212766 is about 285.2609326719.

Adding to 23212766 its reverse (66721232), we get a palindrome (89933998).

The spelling of 23212766 in words is "twenty-three million, two hundred twelve thousand, seven hundred sixty-six".