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2108585830 = 251316219891
BaseRepresentation
bin111110110101110…
…0111011101100110
312102221200020222111
41331223213131212
513304244221310
6545122151234
7103152453361
oct17553473546
95387606874
102108585830
1199227281a
124aa1b251a
13277b05b30
141600830d8
15c51b128a
hex7dae7766

2108585830 has 16 divisors (see below), whose sum is σ = 4087412784. Its totient is φ = 778554720.

The previous prime is 2108585813. The next prime is 2108585833. The reversal of 2108585830 is 385858012.

It is a super-2 number, since 2×21085858302 = 8892268404953577800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2108585833) 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, 8109816 + ... + 8110075.

It is an arithmetic number, because the mean of its divisors is an integer number (255463299).

Almost surely, 22108585830 is an apocalyptic number.

2108585830 is a deficient number, since it is larger than the sum of its proper divisors (1978826954).

2108585830 is a wasteful number, since it uses less digits than its factorization.

2108585830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16219911.

The product of its (nonzero) digits is 76800, while the sum is 40.

The square root of 2108585830 is about 45919.3404787133. The cubic root of 2108585830 is about 1282.3220038544.

The spelling of 2108585830 in words is "two billion, one hundred eight million, five hundred eighty-five thousand, eight hundred thirty".

Divisors: 1 2 5 10 13 26 65 130 16219891 32439782 81099455 162198910 210858583 421717166 1054292915 2108585830