244660240 has 80 divisors (see below), whose sum is σ = 642012480. Its totient is φ = 85890560.

The previous prime is 244660187. The next prime is 244660259. The reversal of 244660240 is 42066442.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 244660199 and 244660208.

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 15 ways as a sum of consecutive naturals, for example, 20727 + ... + 30313.

It is an arithmetic number, because the mean of its divisors is an integer number (8025156).

Almost surely, 2^244660240 is an apocalyptic number.

244660240 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 244660240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321006240).

244660240 is an abundant number, since it is smaller than the sum of its proper divisors (397352240).

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

244660240 is a wasteful number, since it uses less digits than its factorization.

244660240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9640 (or 9634 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 244660240 is about 15641.6188420508. The cubic root of 244660240 is about 625.4430905989.

The spelling of 244660240 in words is "two hundred forty-four million, six hundred sixty thousand, two hundred forty".