20242544 has 40 divisors (see below), whose sum is σ = 45160800. Its totient is φ = 8610048.

The previous prime is 20242511. The next prime is 20242549. The reversal of 20242544 is 44524202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20242549) 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, 16082 + ... + 17294.

It is an arithmetic number, because the mean of its divisors is an integer number (1129020).

Almost surely, 2^20242544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20242544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22580400).

20242544 is an abundant number, since it is smaller than the sum of its proper divisors (24918256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20242544 is a wasteful number, since it uses less digits than its factorization.

20242544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377 (or 1371 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 20242544 is about 4499.1714792837. The cubic root of 20242544 is about 272.5346318524.

Adding to 20242544 its reverse (44524202), we get a palindrome (64766746).

The spelling of 20242544 in words is "twenty million, two hundred forty-two thousand, five hundred forty-four".