23121416 has 16 divisors (see below), whose sum is σ = 43759440. Its totient is φ = 11452240.

The previous prime is 23121403. The next prime is 23121419. The reversal of 23121416 is 61412132.

It is not an unprimeable number, because it can be changed into a prime (23121419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12650 + ... + 14361.

It is an arithmetic number, because the mean of its divisors is an integer number (2734965).

Almost surely, 2^23121416 is an apocalyptic number.

It is an amenable number.

23121416 is a deficient number, since it is larger than the sum of its proper divisors (20638024).

23121416 is a wasteful number, since it uses less digits than its factorization.

23121416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27124 (or 27120 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 23121416 is about 4808.4733544026. The cubic root of 23121416 is about 284.8862416619.

Adding to 23121416 its reverse (61412132), we get a palindrome (84533548).

The spelling of 23121416 in words is "twenty-three million, one hundred twenty-one thousand, four hundred sixteen".