23421306 has 16 divisors (see below), whose sum is σ = 48354048. Its totient is φ = 7555200.

The previous prime is 23421287. The next prime is 23421311. The reversal of 23421306 is 60312432.

It is a happy number.

It is a Curzon 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 in 7 ways as a sum of consecutive naturals, for example, 62775 + ... + 63146.

It is an arithmetic number, because the mean of its divisors is an integer number (3022128).

Almost surely, 2^23421306 is an apocalyptic number.

23421306 is an abundant number, since it is smaller than the sum of its proper divisors (24932742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23421306 is a wasteful number, since it uses less digits than its factorization.

23421306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125957.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 23421306 is about 4839.5563846287. The cubic root of 23421306 is about 286.1126343324.

Adding to 23421306 its reverse (60312432), we get a palindrome (83733738).

The spelling of 23421306 in words is "twenty-three million, four hundred twenty-one thousand, three hundred six".