20342444 has 6 divisors (see below), whose sum is σ = 35599284. Its totient is φ = 10171220.

The previous prime is 20342431. The next prime is 20342447. The reversal of 20342444 is 44424302.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (20342447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2542802 + ... + 2542809.

It is an arithmetic number, because the mean of its divisors is an integer number (5933214).

Almost surely, 2^20342444 is an apocalyptic number.

It is an amenable number.

20342444 is a deficient number, since it is larger than the sum of its proper divisors (15256840).

20342444 is a wasteful number, since it uses less digits than its factorization.

20342444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5085615 (or 5085613 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 20342444 is about 4510.2598594759. The cubic root of 20342444 is about 272.9822294739.

Adding to 20342444 its reverse (44424302), we get a palindrome (64766746).

The spelling of 20342444 in words is "twenty million, three hundred forty-two thousand, four hundred forty-four".