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111982 = 2135973
BaseRepresentation
bin11011010101101110
312200121111
4123111232
512040412
62222234
7644323
oct332556
9180544
10111982
1177152
125497a
133bc80
142cb4a
15232a7
hex1b56e

111982 has 16 divisors (see below), whose sum is σ = 186480. Its totient is φ = 50112.

The previous prime is 111977. The next prime is 111997. The reversal of 111982 is 289111.

It is a plaindrome in base 6.

It is a congruent number.

It is an unprimeable number.

111982 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 1498 + ... + 1570.

It is an arithmetic number, because the mean of its divisors is an integer number (11655).

2111982 is an apocalyptic number.

111982 is a deficient number, since it is larger than the sum of its proper divisors (74498).

111982 is a wasteful number, since it uses less digits than its factorization.

111982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147.

The product of its digits is 144, while the sum is 22.

The square root of 111982 is about 334.6371168893. The cubic root of 111982 is about 48.2002628499.

The spelling of 111982 in words is "one hundred eleven thousand, nine hundred eighty-two".

Divisors: 1 2 13 26 59 73 118 146 767 949 1534 1898 4307 8614 55991 111982