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28300214681 = 314312118121
BaseRepresentation
bin11010010110110100…
…110000000110011001
32201001021211212021022
4122112310300012121
5430424323332211
621000111452225
72021206566344
oct322664600631
981037755238
1028300214681
1111002808182
125599827075
13289019247b
1415267bb45b
15b097b8bdb
hex696d30199

28300214681 has 8 divisors (see below), whose sum is σ = 29280918528. Its totient is φ = 27323748000.

The previous prime is 28300214641. The next prime is 28300214693. The reversal of 28300214681 is 18641200382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28300214681 - 230 = 27226472857 is a prime.

It is a super-2 number, since 2×283002146812 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28300214611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1045700 + ... + 1072421.

It is an arithmetic number, because the mean of its divisors is an integer number (3660114816).

Almost surely, 228300214681 is an apocalyptic number.

It is an amenable number.

28300214681 is a deficient number, since it is larger than the sum of its proper divisors (980703847).

28300214681 is a wasteful number, since it uses less digits than its factorization.

28300214681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118583.

The product of its (nonzero) digits is 18432, while the sum is 35.

The spelling of 28300214681 in words is "twenty-eight billion, three hundred million, two hundred fourteen thousand, six hundred eighty-one".

Divisors: 1 31 431 13361 2118121 65661751 912910151 28300214681