244444240 has 40 divisors (see below), whose sum is σ = 573978888. Its totient is φ = 96806400.

The previous prime is 244444231. The next prime is 244444259. The reversal of 244444240 is 42444442.

It can be written as a sum of positive squares in 4 ways, for example, as 150896656 + 93547584 = 12284^2 + 9672^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 244444199 and 244444208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7047 + ... + 23206.

Almost surely, 2^244444240 is an apocalyptic number.

244444240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244444240 is an abundant number, since it is smaller than the sum of its proper divisors (329534648).

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

244444240 is a wasteful number, since it uses less digits than its factorization.

244444240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30367 (or 30361 counting only the distinct ones).

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

The square root of 244444240 is about 15634.7126612548. The cubic root of 244444240 is about 625.2589774742.

Adding to 244444240 its reverse (42444442), we get a palindrome (286888682).

The spelling of 244444240 in words is "two hundred forty-four million, four hundred forty-four thousand, two hundred forty".