20240220404440 has 32 divisors (see below), whose sum is σ = 45570998720880. Its totient is φ = 8090665439872.

The previous prime is 20240220404407. The next prime is 20240220404447. The reversal of 20240220404440 is 4440402204202.

It is a junction number, because it is equal to n+sod(n) for n = 20240220404399 and 20240220404408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20240220404447) 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, 169399594 + ... + 169519033.

Almost surely, 2^{20240220404440} is an apocalyptic number.

20240220404440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20240220404440 is an abundant number, since it is smaller than the sum of its proper divisors (25330778316440).

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

20240220404440 is a wasteful number, since it uses less digits than its factorization.

20240220404440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338920131 (or 338920127 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 20240220404440 its reverse (4440402204202), we get a palindrome (24680622608642).

The spelling of 20240220404440 in words is "twenty trillion, two hundred forty billion, two hundred twenty million, four hundred four thousand, four hundred forty".