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199301830 = 257131911527
BaseRepresentation
bin10111110000100…
…01101011000110
3111220000120201021
423320101223012
5402010124310
631435421354
74640015620
oct1370215306
9456016637
10199301830
11a2556462
12568b485a
13323a15a0
141c67dc10
151276c5da
hexbe11ac6

199301830 has 64 divisors (see below), whose sum is σ = 464808960. Its totient is φ = 59750784.

The previous prime is 199301827. The next prime is 199301857. The reversal of 199301830 is 38103991.

199301830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11527 + ... + 23053.

It is an arithmetic number, because the mean of its divisors is an integer number (7262640).

Almost surely, 2199301830 is an apocalyptic number.

199301830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199301830 is the 11527-th pentagonal number.

199301830 is an abundant number, since it is smaller than the sum of its proper divisors (265507130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199301830 is a wasteful number, since it uses less digits than its factorization.

199301830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11573.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 199301830 is about 14117.4300069099. The cubic root of 199301830 is about 584.1222671224.

The spelling of 199301830 in words is "one hundred ninety-nine million, three hundred one thousand, eight hundred thirty".

Divisors: 1 2 5 7 10 13 14 19 26 35 38 65 70 91 95 130 133 182 190 247 266 455 494 665 910 1235 1330 1729 2470 3458 8645 11527 17290 23054 57635 80689 115270 149851 161378 219013 299702 403445 438026 749255 806890 1048957 1095065 1498510 1533091 2097914 2190130 2847169 3066182 5244785 5694338 7665455 10489570 14235845 15330910 19930183 28471690 39860366 99650915 199301830