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20704300 = 22521719641
BaseRepresentation
bin100111011111…
…0110000101100
31102221212221221
41032332300230
520300014200
62015433124
7340661251
oct116766054
942855857
1020704300
11107614a1
126b257a4
13439bb86
142a6d428
151c3e91a
hex13bec2c

20704300 has 72 divisors (see below), whose sum is σ = 50153040. Its totient is φ = 7372800.

The previous prime is 20704279. The next prime is 20704309. The reversal of 20704300 is 340702.

It is not an unprimeable number, because it can be changed into a prime (20704309) 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, 31980 + ... + 32620.

It is an arithmetic number, because the mean of its divisors is an integer number (696570).

Almost surely, 220704300 is an apocalyptic number.

20704300 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 20704300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25076520).

20704300 is an abundant number, since it is smaller than the sum of its proper divisors (29448740).

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

20704300 is a wasteful number, since it uses less digits than its factorization.

20704300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 20704300 is about 4550.1977978985. The cubic root of 20704300 is about 274.5913489667.

The spelling of 20704300 in words is "twenty million, seven hundred four thousand, three hundred".

Divisors: 1 2 4 5 10 17 19 20 25 34 38 50 68 76 85 95 100 170 190 323 340 380 425 475 641 646 850 950 1282 1292 1615 1700 1900 2564 3205 3230 6410 6460 8075 10897 12179 12820 16025 16150 21794 24358 32050 32300 43588 48716 54485 60895 64100 108970 121790 207043 217940 243580 272425 304475 414086 544850 608950 828172 1035215 1089700 1217900 2070430 4140860 5176075 10352150 20704300