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244020 = 22357283
BaseRepresentation
bin111011100100110100
3110101201210
4323210310
530302040
65121420
72034300
oct734464
9411653
10244020
11157377
12b9270
13870ba
1464d00
154c480
hex3b934

244020 has 72 divisors (see below), whose sum is σ = 804384. Its totient is φ = 55104.

The previous prime is 244009. The next prime is 244021. The reversal of 244020 is 20442.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 243987 and 244005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2899 + ... + 2981.

It is an arithmetic number, because the mean of its divisors is an integer number (11172).

2244020 is an apocalyptic number.

244020 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 244020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402192).

244020 is an abundant number, since it is smaller than the sum of its proper divisors (560364).

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

244020 is a wasteful number, since it uses less digits than its factorization.

244020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 244020 is about 493.9838054026. The cubic root of 244020 is about 62.4897049710.

Adding to 244020 its reverse (20442), we get a palindrome (264462).

The spelling of 244020 in words is "two hundred forty-four thousand, twenty", and thus it is an iban number.

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 49 60 70 83 84 98 105 140 147 166 196 210 245 249 294 332 415 420 490 498 581 588 735 830 980 996 1162 1245 1470 1660 1743 2324 2490 2905 2940 3486 4067 4980 5810 6972 8134 8715 11620 12201 16268 17430 20335 24402 34860 40670 48804 61005 81340 122010 244020