20244406240 has 24 divisors (see below), whose sum is σ = 47827410120. Its totient is φ = 8097762432.

The previous prime is 20244406219. The next prime is 20244406249. The reversal of 20244406240 is 4260444202.

It is a junction number, because it is equal to n+sod(n) for n = 20244406199 and 20244406208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20244406249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63263610 + ... + 63263929.

It is an arithmetic number, because the mean of its divisors is an integer number (1992808755).

Almost surely, 2^20244406240 is an apocalyptic number.

20244406240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20244406240 is an abundant number, since it is smaller than the sum of its proper divisors (27583003880).

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

20244406240 is a wasteful number, since it uses less digits than its factorization.

20244406240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126527554 (or 126527546 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The spelling of 20244406240 in words is "twenty billion, two hundred forty-four million, four hundred six thousand, two hundred forty".