23218116 has 12 divisors (see below), whose sum is σ = 54175632. Its totient is φ = 7739368.

The previous prime is 23218051. The next prime is 23218121. The reversal of 23218116 is 61181232.

It is a tau number, because it is divible by the number of its divisors (12).

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 in 3 ways as a sum of consecutive naturals, for example, 967410 + ... + 967433.

It is an arithmetic number, because the mean of its divisors is an integer number (4514636).

Almost surely, 2^23218116 is an apocalyptic number.

It is an amenable number.

23218116 is an abundant number, since it is smaller than the sum of its proper divisors (30957516).

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

23218116 is a wasteful number, since it uses less digits than its factorization.

23218116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934850 (or 1934848 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 23218116 is about 4818.5180294360. The cubic root of 23218116 is about 285.2828463143.

Adding to 23218116 its reverse (61181232), we get a palindrome (84399348).

The spelling of 23218116 in words is "twenty-three million, two hundred eighteen thousand, one hundred sixteen".