244840 has 16 divisors (see below), whose sum is σ = 550980. Its totient is φ = 97920.
The previous prime is 244837. The next prime is 244841. The reversal of 244840 is 48442.
It can be written as a sum of positive squares in 2 ways, for example, as 224676 + 20164 = 474^2 + 142^2 .
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (244841) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3021 + ... + 3100.
2244840 is an apocalyptic number.
244840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
244840 is an abundant number, since it is smaller than the sum of its proper divisors (306140).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
244840 is a wasteful number, since it uses less digits than its factorization.
244840 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6132 (or 6128 counting only the distinct ones).
The product of its (nonzero) digits is 1024, while the sum is 22.
The square root of 244840 is about 494.8130960272. The cubic root of 244840 is about 62.5596231033.
The spelling of 244840 in words is "two hundred forty-four thousand, eight hundred forty".
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