Search a number
-
+
44020 = 2253171
BaseRepresentation
bin1010101111110100
32020101101
422233310
52402040
6535444
7242224
oct125764
966341
1044020
1130089
1221584
1317062
1412084
15d09a
hexabf4

44020 has 24 divisors (see below), whose sum is σ = 96768. Its totient is φ = 16800.

The previous prime is 44017. The next prime is 44021. The reversal of 44020 is 2044.

Adding to 44020 its reverse (2044), we get a palindrome (46064).

44020 = 472 + 482 + ... + 612.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 43988 and 44006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44021) 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, 585 + ... + 655.

It is an arithmetic number, because the mean of its divisors is an integer number (4032).

244020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48384).

44020 is an abundant number, since it is smaller than the sum of its proper divisors (52748).

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

44020 is a wasteful number, since it uses less digits than its factorization.

44020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 44020 is about 209.8094373473. The cubic root of 44020 is about 35.3088315556.

The spelling of 44020 in words is "forty-four thousand, twenty", and thus it is an iban number.

Divisors: 1 2 4 5 10 20 31 62 71 124 142 155 284 310 355 620 710 1420 2201 4402 8804 11005 22010 44020