244391040 has 128 divisors (see below), whose sum is σ = 865612800. Its totient is φ = 65166336.

The previous prime is 244390999. The next prime is 244391047. The reversal of 244391040 is 40193442.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 244390995 and 244391013.

It is not an unprimeable number, because it can be changed into a prime (244391047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10209 + ... + 24351.

It is an arithmetic number, because the mean of its divisors is an integer number (6762600).

Almost surely, 2^244391040 is an apocalyptic number.

244391040 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 244391040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (432806400).

244391040 is an abundant number, since it is smaller than the sum of its proper divisors (621221760).

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

244391040 is a wasteful number, since it uses less digits than its factorization.

244391040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14171 (or 14153 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 244391040 is about 15633.0112262481. The cubic root of 244391040 is about 625.2136144485.

The spelling of 244391040 in words is "two hundred forty-four million, three hundred ninety-one thousand, forty".