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204814820 = 22572961827
BaseRepresentation
bin11000011010100…
…11100111100100
3112021101200010002
430031103213210
5404413033240
632153520432
75034616520
oct1415234744
9467350102
10204814820
11a5681451
1258713118
1333581a02
141d2b6d80
1512eaad15
hexc3539e4

204814820 has 96 divisors (see below), whose sum is σ = 517466880. Its totient is φ = 66608640.

The previous prime is 204814817. The next prime is 204814823. The reversal of 204814820 is 28418402.

204814820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (204814817) and next prime (204814823).

It is a super-2 number, since 2×2048148202 = 83898220983264800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (204814823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247247 + ... + 248073.

It is an arithmetic number, because the mean of its divisors is an integer number (5390280).

Almost surely, 2204814820 is an apocalyptic number.

204814820 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 204814820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258733440).

204814820 is an abundant number, since it is smaller than the sum of its proper divisors (312652060).

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

204814820 is a wasteful number, since it uses less digits than its factorization.

204814820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933 (or 931 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 204814820 is about 14311.3528361228. The cubic root of 204814820 is about 589.4592574986.

The spelling of 204814820 in words is "two hundred four million, eight hundred fourteen thousand, eight hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 29 35 58 61 70 116 122 140 145 203 244 290 305 406 427 580 610 812 827 854 1015 1220 1654 1708 1769 2030 2135 3308 3538 4060 4135 4270 5789 7076 8270 8540 8845 11578 12383 16540 17690 23156 23983 24766 28945 35380 47966 49532 50447 57890 61915 95932 100894 115780 119915 123830 167881 201788 239830 247660 252235 335762 353129 479660 504470 671524 706258 839405 1008940 1412516 1462963 1678810 1765645 2925926 3357620 3531290 5851852 7062580 7314815 10240741 14629630 20481482 29259260 40962964 51203705 102407410 204814820