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28830808646 = 2431409237929
BaseRepresentation
bin11010110110011100…
…110011101001000110
32202102021020211100122
4122312130303221012
5433021141334041
621124504141542
72040311554463
oct326634635106
982367224318
1028830808646
1111255270292
1257074678b2
1329460999b3
14157705866a
15b3b176c4b
hex6b6733a46

28830808646 has 16 divisors (see below), whose sum is σ = 44283531600. Its totient is φ = 14070110208.

The previous prime is 28830808631. The next prime is 28830808649. The reversal of 28830808646 is 64680803882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28830808649) 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 7 ways as a sum of consecutive naturals, for example, 2210 + ... + 240138.

It is an arithmetic number, because the mean of its divisors is an integer number (2767720725).

Almost surely, 228830808646 is an apocalyptic number.

28830808646 is a deficient number, since it is larger than the sum of its proper divisors (15452722954).

28830808646 is a wasteful number, since it uses less digits than its factorization.

28830808646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239383.

The product of its (nonzero) digits is 3538944, while the sum is 53.

The spelling of 28830808646 in words is "twenty-eight billion, eight hundred thirty million, eight hundred eight thousand, six hundred forty-six".

Divisors: 1 2 43 86 1409 2818 60587 121174 237929 475858 10230947 20461894 335241961 670483922 14415404323 28830808646