20242744 has 16 divisors (see below), whose sum is σ = 38030400. Its totient is φ = 10101312.

The previous prime is 20242741. The next prime is 20242751. The reversal of 20242744 is 44724202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20242741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2329 + ... + 6775.

It is an arithmetic number, because the mean of its divisors is an integer number (2376900).

Almost surely, 2^20242744 is an apocalyptic number.

It is an amenable number.

20242744 is a deficient number, since it is larger than the sum of its proper divisors (17787656).

20242744 is a wasteful number, since it uses less digits than its factorization.

20242744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5022 (or 5018 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 20242744 is about 4499.1937055432. The cubic root of 20242744 is about 272.5355294133.

Adding to 20242744 its reverse (44724202), we get a palindrome (64966946).

The spelling of 20242744 in words is "twenty million, two hundred forty-two thousand, seven hundred forty-four".