20024440 has 32 divisors (see below), whose sum is σ = 45308160. Its totient is φ = 7964800.

The previous prime is 20024339. The next prime is 20024483. The reversal of 20024440 is 4442002.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6330 + ... + 8950.

It is an arithmetic number, because the mean of its divisors is an integer number (1415880).

Almost surely, 2^20024440 is an apocalyptic number.

20024440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20024440 is an abundant number, since it is smaller than the sum of its proper divisors (25283720).

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

20024440 is a wasteful number, since it uses less digits than its factorization.

20024440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823 (or 2819 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 20024440 is about 4474.8675958066. The cubic root of 20024440 is about 271.5522839299.

Adding to 20024440 its reverse (4442002), we get a palindrome (24466442).

The spelling of 20024440 in words is "twenty million, twenty-four thousand, four hundred forty".