23166945 has 32 divisors (see below), whose sum is σ = 41783040. Its totient is φ = 12176640.

The previous prime is 23166943. The next prime is 23167031. The reversal of 23166945 is 54966132.

It is a happy number.

It is not a de Polignac number, because 23166945 - 2¹ = 23166943 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23166943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8377 + ... + 10793.

It is an arithmetic number, because the mean of its divisors is an integer number (1305720).

Almost surely, 2^23166945 is an apocalyptic number.

It is an amenable number.

23166945 is a deficient number, since it is larger than the sum of its proper divisors (18616095).

23166945 is a wasteful number, since it uses less digits than its factorization.

23166945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502 (or 2496 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 23166945 is about 4813.2052729964. The cubic root of 23166945 is about 285.0731114369.

It can be divided in two parts, 2316 and 6945, that added together give a cube (9261 = 21³).

The spelling of 23166945 in words is "twenty-three million, one hundred sixty-six thousand, nine hundred forty-five".