20444242 has 16 divisors (see below), whose sum is σ = 37743552. Its totient is φ = 8087760.

The previous prime is 20444233. The next prime is 20444257. The reversal of 20444242 is 24244402.

20444242 is a modest number, since divided by 4242 gives 2044 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55984 + ... + 56347.

It is an arithmetic number, because the mean of its divisors is an integer number (2358972).

Almost surely, 2^20444242 is an apocalyptic number.

20444242 is a deficient number, since it is larger than the sum of its proper divisors (17299310).

20444242 is a wasteful number, since it uses less digits than its factorization.

20444242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112353.

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 20444242 is about 4521.5309354244. The cubic root of 20444242 is about 273.4368261012.

Adding to 20444242 its reverse (24244402), we get a palindrome (44688644).

The spelling of 20444242 in words is "twenty million, four hundred forty-four thousand, two hundred forty-two".