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28683818030 = 257409768829
BaseRepresentation
bin11010101101101100…
…000101010000101110
32202001000122221010202
4122231230011100232
5432221024134110
621102133433502
72033545300430
oct325554052056
982030587122
1028683818030
111118a2a403a
12568619b892
1329217b27ba
141561714650
15b2d2de0a5
hex6adb0542e

28683818030 has 16 divisors (see below), whose sum is σ = 59006711520. Its totient is φ = 9834451872.

The previous prime is 28683817999. The next prime is 28683818069. The reversal of 28683818030 is 3081838682.

It is a super-2 number, since 2×286838180302 (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204884345 + ... + 204884484.

It is an arithmetic number, because the mean of its divisors is an integer number (3687919470).

Almost surely, 228683818030 is an apocalyptic number.

28683818030 is an abundant number, since it is smaller than the sum of its proper divisors (30322893490).

28683818030 is a wasteful number, since it uses less digits than its factorization.

28683818030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409768843.

The product of its (nonzero) digits is 442368, while the sum is 47.

The spelling of 28683818030 in words is "twenty-eight billion, six hundred eighty-three million, eight hundred eighteen thousand, thirty".

Divisors: 1 2 5 7 10 14 35 70 409768829 819537658 2048844145 2868381803 4097688290 5736763606 14341909015 28683818030