2444400020 has 24 divisors (see below), whose sum is σ = 5181218784. Its totient is φ = 968621216.

The previous prime is 2444400011. The next prime is 2444400037. The reversal of 2444400020 is 200044442.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2444399965 and 2444400001.

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, 568982 + ... + 573261.

It is an arithmetic number, because the mean of its divisors is an integer number (215884116).

Almost surely, 2^2444400020 is an apocalyptic number.

2444400020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2444400020 is an abundant number, since it is smaller than the sum of its proper divisors (2736818764).

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

2444400020 is a wasteful number, since it uses less digits than its factorization.

2444400020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142359 (or 1142357 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 2444400020 is about 49440.8739809482. The cubic root of 2444400020 is about 1347.0718463772.

Adding to 2444400020 its reverse (200044442), we get a palindrome (2644444462).

The spelling of 2444400020 in words is "two billion, four hundred forty-four million, four hundred thousand, twenty".