23240216 has 8 divisors (see below), whose sum is σ = 43575420. Its totient is φ = 11620104.

The previous prime is 23240213. The next prime is 23240227. The reversal of 23240216 is 61204232.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23240213) by changing a digit.

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, 1452506 + ... + 1452521.

Almost surely, 2^23240216 is an apocalyptic number.

It is an amenable number.

23240216 is a deficient number, since it is larger than the sum of its proper divisors (20335204).

23240216 is a wasteful number, since it uses less digits than its factorization.

23240216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905033 (or 2905029 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 23240216 is about 4820.8107202005. The cubic root of 23240216 is about 285.3733324327.

Adding to 23240216 its reverse (61204232), we get a palindrome (84444448).

The spelling of 23240216 in words is "twenty-three million, two hundred forty thousand, two hundred sixteen".