20024012440 has 32 divisors (see below), whose sum is σ = 45084420000. Its totient is φ = 8004201984.

The previous prime is 20024012417. The next prime is 20024012453. The reversal of 20024012440 is 4421042002.

It is a super-2 number, since 2×20024012440² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 108540 + ... + 227659.

It is an arithmetic number, because the mean of its divisors is an integer number (1408888125).

Almost surely, 2^20024012440 is an apocalyptic number.

20024012440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20024012440 is an abundant number, since it is smaller than the sum of its proper divisors (25060407560).

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

20024012440 is a wasteful number, since it uses less digits than its factorization.

20024012440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337699 (or 337695 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 20024012440 its reverse (4421042002), we get a palindrome (24445054442).

The spelling of 20024012440 in words is "twenty billion, twenty-four million, twelve thousand, four hundred forty".