20244242 has 16 divisors (see below), whose sum is σ = 31256064. Its totient is φ = 9828000.

The previous prime is 20244239. The next prime is 20244247. The reversal of 20244242 is 24244202.

It is not an unprimeable number, because it can be changed into a prime (20244247) 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, 21767 + ... + 22677.

It is an arithmetic number, because the mean of its divisors is an integer number (1953504).

Almost surely, 2^20244242 is an apocalyptic number.

20244242 is a deficient number, since it is larger than the sum of its proper divisors (11011822).

20244242 is a wasteful number, since it uses less digits than its factorization.

20244242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225.

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 20244242 is about 4499.3601767362. The cubic root of 20244242 is about 272.5422519563.

Adding to 20244242 its reverse (24244202), we get a palindrome (44488444).

It can be divided in two parts, 202 and 44242, that added together give a palindrome (44444).

The spelling of 20244242 in words is "twenty million, two hundred forty-four thousand, two hundred forty-two".