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11985930 = 23251112107
BaseRepresentation
bin101101101110…
…010000001010
3211112221121100
4231232100022
511032022210
61104522230
7203610255
oct55562012
924487540
1011985930
116847230
124020376
132638788
14184009c
1510bb5c0
hexb6e40a

11985930 has 48 divisors (see below), whose sum is σ = 33999264. Its totient is φ = 2905440.

The previous prime is 11985923. The next prime is 11985937. The reversal of 11985930 is 3958911.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11985923) and next prime (11985937).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11985937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5064 + ... + 7043.

It is an arithmetic number, because the mean of its divisors is an integer number (708318).

Almost surely, 211985930 is an apocalyptic number.

11985930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11985930 is an abundant number, since it is smaller than the sum of its proper divisors (22013334).

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

11985930 is a wasteful number, since it uses less digits than its factorization.

11985930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12131 (or 12128 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 11985930 is about 3462.0701899297. The cubic root of 11985930 is about 228.8533350201.

The spelling of 11985930 in words is "eleven million, nine hundred eighty-five thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 9 10 11 15 18 22 30 33 45 55 66 90 99 110 165 198 330 495 990 12107 24214 36321 60535 72642 108963 121070 133177 181605 217926 266354 363210 399531 544815 665885 799062 1089630 1198593 1331770 1997655 2397186 3995310 5992965 11985930