20144245 has 8 divisors (see below), whose sum is σ = 26370720. Its totient is φ = 14650320.

The previous prime is 20144239. The next prime is 20144249. The reversal of 20144245 is 54244102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20144245 - 2⁹ = 20143733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183075 + ... + 183184.

It is an arithmetic number, because the mean of its divisors is an integer number (3296340).

Almost surely, 2^20144245 is an apocalyptic number.

It is an amenable number.

20144245 is a deficient number, since it is larger than the sum of its proper divisors (6226475).

20144245 is a wasteful number, since it uses less digits than its factorization.

20144245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366275.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 20144245 is about 4488.2340625239. The cubic root of 20144245 is about 272.0927677013.

Adding to 20144245 its reverse (54244102), we get a palindrome (74388347).

The spelling of 20144245 in words is "twenty million, one hundred forty-four thousand, two hundred forty-five".