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44440 = 23511101
BaseRepresentation
bin1010110110011000
32020221221
422312120
52410230
6541424
7243364
oct126630
966857
1044440
1130430
1221874
13172c6
14122a4
15d27a

44440 has 32 divisors (see below), whose sum is σ = 110160. Its totient is φ = 16000.

The previous prime is 44417. The next prime is 44449. The reversal of 44440 is 4444.

Adding to 44440 its reverse (4444), we get a palindrome (48884).

It can be divided in two parts, 444 and 40, that added together give a palindrome (484).

44440 = 452 + 462 + ... + 602.

44440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390 + ... + 490.

244440 is an apocalyptic number.

44440 is a gapful number since it is divisible by the number (40) 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 44440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55080).

44440 is an abundant number, since it is smaller than the sum of its proper divisors (65720).

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

44440 is a wasteful number, since it uses less digits than its factorization.

44440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 44440 is about 210.8079694888. The cubic root of 44440 is about 35.4207715350.

The spelling of 44440 in words is "forty-four thousand, four hundred forty", and thus it is an iban number.