244140 has 48 divisors (see below), whose sum is σ = 738528. Its totient is φ = 59904.

The previous prime is 244129. The next prime is 244141. The reversal of 244140 is 41442.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

244140 is an undulating number in base 5.

It is not an unprimeable number, because it can be changed into a prime (244141) by changing a digit.

244140 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 624 + ... + 936.

It is an arithmetic number, because the mean of its divisors is an integer number (15386).

2²⁴⁴¹⁴⁰ is an apocalyptic number.

244140 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 244140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369264).

244140 is an abundant number, since it is smaller than the sum of its proper divisors (494388).

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

244140 is a wasteful number, since it uses less digits than its factorization.

244140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 244140 is about 494.1052519454. The cubic root of 244140 is about 62.4999466666.

Adding to 244140 its reverse (41442), we get a palindrome (285582).

The spelling of 244140 in words is "two hundred forty-four thousand, one hundred forty", and thus it is an iban number.