23133645 has 12 divisors (see below), whose sum is σ = 40098396. Its totient is φ = 12337920.

The previous prime is 23133641. The next prime is 23133647. The reversal of 23133645 is 54633132.

It is a happy number.

23133645 is a `hidden beast` number, since 2 + 3 + 13 + 3 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11964681 + 11168964 = 3459^2 + 3342^2 .

It is not a de Polignac number, because 23133645 - 2² = 23133641 is a prime.

It is a super-3 number, since 3×23133645³ (a number of 23 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23133641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 256996 + ... + 257085.

It is an arithmetic number, because the mean of its divisors is an integer number (3341533).

Almost surely, 2^23133645 is an apocalyptic number.

It is an amenable number.

23133645 is a deficient number, since it is larger than the sum of its proper divisors (16964751).

23133645 is a wasteful number, since it uses less digits than its factorization.

23133645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514092 (or 514089 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 23133645 is about 4809.7447957246. The cubic root of 23133645 is about 284.9364585952.

Adding to 23133645 its reverse (54633132), we get a palindrome (77766777).

The spelling of 23133645 in words is "twenty-three million, one hundred thirty-three thousand, six hundred forty-five".