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806200020 = 223351978577
BaseRepresentation
bin110000000011011…
…010001011010100
32002012000012112000
4300003122023110
53122341400040
6211555355300
725656405243
oct6003321324
92065005460
10806200020
1138409600a
121a5bb2b30
13cb043c42
147910095a
154ab9e130
hex300da2d4

806200020 has 96 divisors (see below), whose sum is σ = 2640220800. Its totient is φ = 203668992.

The previous prime is 806200019. The next prime is 806200037. The reversal of 806200020 is 20002608.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 806199966 and 806200002.

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, 29029 + ... + 49548.

It is an arithmetic number, because the mean of its divisors is an integer number (27502300).

Almost surely, 2806200020 is an apocalyptic number.

It is an amenable number.

806200020 is an abundant number, since it is smaller than the sum of its proper divisors (1834020780).

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

806200020 is a wasteful number, since it uses less digits than its factorization.

806200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78614 (or 78606 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 806200020 is about 28393.6616166355. The cubic root of 806200020 is about 930.7097599546.

Adding to 806200020 its reverse (20002608), we get a palindrome (826202628).

It can be divided in two parts, 80 and 6200020, that added together give a square (6200100 = 24902).

The spelling of 806200020 in words is "eight hundred six million, two hundred thousand, twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 19 20 27 30 36 38 45 54 57 60 76 90 95 108 114 135 171 180 190 228 270 285 342 380 513 540 570 684 855 1026 1140 1710 2052 2565 3420 5130 10260 78577 157154 235731 314308 392885 471462 707193 785770 942924 1178655 1414386 1492963 1571540 2121579 2357310 2828772 2985926 3535965 4243158 4478889 4714620 5971852 7071930 7464815 8486316 8957778 10607895 13436667 14143860 14929630 17915556 21215790 22394445 26873334 29859260 40310001 42431580 44788890 53746668 67183335 80620002 89577780 134366670 161240004 201550005 268733340 403100010 806200020