244404240 has 160 divisors (see below), whose sum is σ = 824411520. Its totient is φ = 59645952.

The previous prime is 244404229. The next prime is 244404283. The reversal of 244404240 is 42404442.

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 244404240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150151 + ... + 151769.

It is an arithmetic number, because the mean of its divisors is an integer number (5152572).

Almost surely, 2^244404240 is an apocalyptic number.

244404240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 244404240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (412205760).

244404240 is an abundant number, since it is smaller than the sum of its proper divisors (580007280).

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

244404240 is a wasteful number, since it uses less digits than its factorization.

244404240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689 (or 1683 counting only the distinct ones).

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

The square root of 244404240 is about 15633.4334040863. The cubic root of 244404240 is about 625.2248705501.

Adding to 244404240 its reverse (42404442), we get a palindrome (286808682).

It can be divided in two parts, 24440 and 4240, that added together give a triangular number (28680 = T₂₃₉).

The spelling of 244404240 in words is "two hundred forty-four million, four hundred four thousand, two hundred forty".