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14031220 = 2257315361
BaseRepresentation
bin110101100001…
…100101110100
3222101212012211
4311201211310
512042444340
61220423204
7230156230
oct65414564
928355184
1014031220
117a13955
124847b04
132ba36c8
141c135c0
1513725ea
hexd61974

14031220 has 96 divisors (see below), whose sum is σ = 35997696. Its totient is φ = 4492800.

The previous prime is 14031217. The next prime is 14031299. The reversal of 14031220 is 2213041.

14031220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 14031220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229990 + ... + 230050.

It is an arithmetic number, because the mean of its divisors is an integer number (374976).

Almost surely, 214031220 is an apocalyptic number.

14031220 is a gapful number since it is divisible by the number (10) 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 14031220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17998848).

14031220 is an abundant number, since it is smaller than the sum of its proper divisors (21966476).

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

14031220 is a wasteful number, since it uses less digits than its factorization.

14031220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 14031220 is about 3745.8270114889. The cubic root of 14031220 is about 241.1932473195.

Adding to 14031220 its reverse (2213041), we get a palindrome (16244261).

The spelling of 14031220 in words is "fourteen million, thirty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 31 35 53 61 62 70 106 122 124 140 155 212 217 244 265 305 310 371 427 434 530 610 620 742 854 868 1060 1085 1220 1484 1643 1708 1855 1891 2135 2170 3233 3286 3710 3782 4270 4340 6466 6572 7420 7564 8215 8540 9455 11501 12932 13237 16165 16430 18910 22631 23002 26474 32330 32860 37820 45262 46004 52948 57505 64660 66185 90524 100223 113155 115010 132370 200446 226310 230020 264740 400892 452620 501115 701561 1002230 1403122 2004460 2806244 3507805 7015610 14031220