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28830605017 = 37779205541
BaseRepresentation
bin11010110110011100…
…000001111011011001
32202102020212111000211
4122312130001323121
5433021113330032
621124455531121
72040310046014
oct326634017331
982366774024
1028830605017
11112551412a5
125707389aa1
1329460280c6
14157700437b
15b3b136747
hex6b6701ed9

28830605017 has 4 divisors (see below), whose sum is σ = 29609810596. Its totient is φ = 28051399440.

The previous prime is 28830604981. The next prime is 28830605029. The reversal of 28830605017 is 71050603882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16578107536 + 12252497481 = 128756^2 + 110691^2 .

It is a cyclic number.

It is not a de Polignac number, because 28830605017 - 219 = 28830080729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28830605417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389602734 + ... + 389602807.

It is an arithmetic number, because the mean of its divisors is an integer number (7402452649).

Almost surely, 228830605017 is an apocalyptic number.

It is an amenable number.

28830605017 is a deficient number, since it is larger than the sum of its proper divisors (779205579).

28830605017 is an equidigital number, since it uses as much as digits as its factorization.

28830605017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779205578.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 28830605017 in words is "twenty-eight billion, eight hundred thirty million, six hundred five thousand, seventeen".

Divisors: 1 37 779205541 28830605017