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28910112022 = 21123330718371
BaseRepresentation
bin11010111011001011…
…010100110100010110
32202121210110212010201
4122323023110310112
5433201442041042
621140420011114
72042263616611
oct327313246426
982553425121
1028910112022
1111296006070
125729b30a9a
132959644c7c
1415837bd178
15b430de1b7
hex6bb2d4d16

28910112022 has 32 divisors (see below), whose sum is σ = 47667844224. Its totient is φ = 13041230400.

The previous prime is 28910112019. The next prime is 28910112053. The reversal of 28910112022 is 22021101982.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1564497 + ... + 1582867.

It is an arithmetic number, because the mean of its divisors is an integer number (1489620132).

Almost surely, 228910112022 is an apocalyptic number.

28910112022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28910112022 is a deficient number, since it is larger than the sum of its proper divisors (18757732202).

28910112022 is a wasteful number, since it uses less digits than its factorization.

28910112022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18924.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 28910112022 in words is "twenty-eight billion, nine hundred ten million, one hundred twelve thousand, twenty-two".

Divisors: 1 2 11 22 233 307 466 614 2563 3377 5126 6754 18371 36742 71531 143062 202081 404162 786841 1573682 4280443 5639897 8560886 11279794 47084873 62038867 94169746 124077734 1314096001 2628192002 14455056011 28910112022