23144245 has 4 divisors (see below), whose sum is σ = 27773100. Its totient is φ = 18515392.

The previous prime is 23144243. The next prime is 23144273. The reversal of 23144245 is 54244132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10284849 + 12859396 = 3207^2 + 3586^2 .

It is a cyclic number.

It is not a de Polignac number, because 23144245 - 2¹ = 23144243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23144243) 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, 2314420 + ... + 2314429.

It is an arithmetic number, because the mean of its divisors is an integer number (6943275).

Almost surely, 2^23144245 is an apocalyptic number.

It is an amenable number.

23144245 is a deficient number, since it is larger than the sum of its proper divisors (4628855).

23144245 is an equidigital number, since it uses as much as digits as its factorization.

23144245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4628854.

The product of its digits is 3840, while the sum is 25.

The square root of 23144245 is about 4810.8465990925. The cubic root of 23144245 is about 284.9799719177.

Adding to 23144245 its reverse (54244132), we get a palindrome (77388377).

The spelling of 23144245 in words is "twenty-three million, one hundred forty-four thousand, two hundred forty-five".