23212646 has 4 divisors (see below), whose sum is σ = 34818972. Its totient is φ = 11606322.

The previous prime is 23212627. The next prime is 23212663. The reversal of 23212646 is 64621232.

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 (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5803160 + ... + 5803163.

It is an arithmetic number, because the mean of its divisors is an integer number (8704743).

Almost surely, 2^23212646 is an apocalyptic number.

23212646 is a deficient number, since it is larger than the sum of its proper divisors (11606326).

23212646 is a wasteful number, since it uses less digits than its factorization.

23212646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11606325.

The product of its digits is 3456, while the sum is 26.

The square root of 23212646 is about 4817.9503940991. The cubic root of 23212646 is about 285.2604411123.

Adding to 23212646 its reverse (64621232), we get a palindrome (87833878).

The spelling of 23212646 in words is "twenty-three million, two hundred twelve thousand, six hundred forty-six".