20242245 has 16 divisors (see below), whose sum is σ = 32489280. Its totient is φ = 10761984.

The previous prime is 20242213. The next prime is 20242247. The reversal of 20242245 is 54224202.

It is not a de Polignac number, because 20242245 - 2⁵ = 20242213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20242247) 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, 3261 + ... + 7149.

It is an arithmetic number, because the mean of its divisors is an integer number (2030580).

Almost surely, 2^20242245 is an apocalyptic number.

It is an amenable number.

20242245 is a deficient number, since it is larger than the sum of its proper divisors (12247035).

20242245 is a wasteful number, since it uses less digits than its factorization.

20242245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4244.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 20242245 is about 4499.1382508209. The cubic root of 20242245 is about 272.5332899879.

Adding to 20242245 its reverse (54224202), we get a palindrome (74466447).

The spelling of 20242245 in words is "twenty million, two hundred forty-two thousand, two hundred forty-five".