23216745 has 16 divisors (see below), whose sum is σ = 37215360. Its totient is φ = 12359424.

The previous prime is 23216741. The next prime is 23216759. The reversal of 23216745 is 54761232.

It is not a de Polignac number, because 23216745 - 2² = 23216741 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (23216741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9841 + ... + 11969.

It is an arithmetic number, because the mean of its divisors is an integer number (2325960).

Almost surely, 2^23216745 is an apocalyptic number.

It is an amenable number.

23216745 is a deficient number, since it is larger than the sum of its proper divisors (13998615).

23216745 is a wasteful number, since it uses less digits than its factorization.

23216745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2864.

The product of its digits is 10080, while the sum is 30.

The square root of 23216745 is about 4818.3757636780. The cubic root of 23216745 is about 285.2772310082.

Adding to 23216745 its reverse (54761232), we get a palindrome (77977977).

The spelling of 23216745 in words is "twenty-three million, two hundred sixteen thousand, seven hundred forty-five".