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44420 = 2252221
BaseRepresentation
bin1010110110000100
32020221012
422312010
52410140
6541352
7243335
oct126604
966835
1044420
1130412
1221858
13172ac
141228c
15d265
hexad84

44420 has 12 divisors (see below), whose sum is σ = 93324. Its totient is φ = 17760.

The previous prime is 44417. The next prime is 44449. The reversal of 44420 is 2444.

It can be written as a sum of positive squares in 2 ways, for example, as 23104 + 21316 = 152^2 + 146^2 .

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 14.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 44395 and 44404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1091 + ... + 1130.

It is an arithmetic number, because the mean of its divisors is an integer number (7777).

244420 is an apocalyptic number.

It is an amenable number.

44420 is an abundant number, since it is smaller than the sum of its proper divisors (48904).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46662).

44420 is a wasteful number, since it uses less digits than its factorization.

44420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230 (or 2228 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 44420 is about 210.7605276137. The cubic root of 44420 is about 35.4154570906.

Adding to 44420 its reverse (2444), we get a palindrome (46864).

It can be divided in two parts, 444 and 20, that added together give a palindrome (464).

The spelling of 44420 in words is "forty-four thousand, four hundred twenty", and thus it is an iban number.

Divisors: 1 2 4 5 10 20 2221 4442 8884 11105 22210 44420