2244400440 has 32 divisors (see below), whose sum is σ = 6733201680. Its totient is φ = 598506752.

The previous prime is 2244400409. The next prime is 2244400481. The reversal of 2244400440 is 440044422.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2244400440.

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, 9351549 + ... + 9351788.

Almost surely, 2^2244400440 is an apocalyptic number.

2244400440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2244400440 is an abundant number, since it is smaller than the sum of its proper divisors (4488801240).

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

2244400440 is a wasteful number, since it uses less digits than its factorization.

2244400440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18703351 (or 18703347 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 2244400440 is about 47375.1035882773. The cubic root of 2244400440 is about 1309.2827571490.

Adding to 2244400440 its reverse (440044422), we get a palindrome (2684444862).

The spelling of 2244400440 in words is "two billion, two hundred forty-four million, four hundred thousand, four hundred forty".