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204800000 = 21655
BaseRepresentation
bin11000011010100…
…00000000000000
3112021100220210012
430031100000000
5404412100000
632153324052
75034525356
oct1415200000
9467326705
10204800000
11a56712a9
1258706628
1333578042
141d2b17d6
1512ea6735
hexc350000

204800000 has 102 divisors (see below), whose sum is σ = 511963326. Its totient is φ = 81920000.

The previous prime is 204799951. The next prime is 204800017. The reversal of 204800000 is 8402.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

204800000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 94633984 + 110166016 = 9728^2 + 10496^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40959998 + ... + 40960002.

Almost surely, 2204800000 is an apocalyptic number.

204800000 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 204800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255981663).

204800000 is an abundant number, since it is smaller than the sum of its proper divisors (307163326).

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

204800000 is an frugal number, since it uses more digits than its factorization.

204800000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 7 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 204800000 is about 14310.8350559987. The cubic root of 204800000 is about 589.4450397825.

204800000 divided by its product of nonzero digits (64) gives a 5-th power (3200000 = 205).

Adding to 204800000 its reverse (8402), we get a palindrome (204808402).

The spelling of 204800000 in words is "two hundred four million, eight hundred thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 256 320 400 500 512 625 640 800 1000 1024 1250 1280 1600 2000 2048 2500 2560 3125 3200 4000 4096 5000 5120 6250 6400 8000 8192 10000 10240 12500 12800 16000 16384 20000 20480 25000 25600 32000 32768 40000 40960 50000 51200 64000 65536 80000 81920 100000 102400 128000 160000 163840 200000 204800 256000 320000 327680 400000 409600 512000 640000 800000 819200 1024000 1280000 1600000 1638400 2048000 2560000 3200000 4096000 5120000 6400000 8192000 10240000 12800000 20480000 25600000 40960000 51200000 102400000 204800000