244340040 has 128 divisors (see below), whose sum is σ = 874229760. Its totient is φ = 53416704.

The previous prime is 244340029. The next prime is 244340059. The reversal of 244340040 is 40043442.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 244339989 and 244340016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12997 + ... + 25643.

It is an arithmetic number, because the mean of its divisors is an integer number (6829920).

Almost surely, 2^244340040 is an apocalyptic number.

244340040 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 244340040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (437114880).

244340040 is an abundant number, since it is smaller than the sum of its proper divisors (629889720).

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

244340040 is a wasteful number, since it uses less digits than its factorization.

244340040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12691 (or 12687 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 244340040 is about 15631.3799774684. The cubic root of 244340040 is about 625.1701211565.

Adding to 244340040 its reverse (40043442), we get a palindrome (284383482).

The spelling of 244340040 in words is "two hundred forty-four million, three hundred forty thousand, forty".