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111444445 = 574616907
BaseRepresentation
bin1101010010010…
…00000111011101
321202200222001001
412221020013131
5212012210240
615020350301
72522155630
oct651100735
9252628031
10111444445
11579a8952
12313a5391
131a11c978
1410b2dc17
159bb589a
hex6a481dd

111444445 has 16 divisors (see below), whose sum is σ = 153191808. Its totient is φ = 76242240.

The previous prime is 111444439. The next prime is 111444449. The reversal of 111444445 is 544444111.

It is not a de Polignac number, because 111444445 - 29 = 111443933 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111444449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12682 + ... + 19588.

It is an arithmetic number, because the mean of its divisors is an integer number (9574488).

Almost surely, 2111444445 is an apocalyptic number.

It is an amenable number.

111444445 is a deficient number, since it is larger than the sum of its proper divisors (41747363).

111444445 is an equidigital number, since it uses as much as digits as its factorization.

111444445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7380.

The product of its digits is 5120, while the sum is 28.

The square root of 111444445 is about 10556.7251077216. The cubic root of 111444445 is about 481.2301274754.

Adding to 111444445 its reverse (544444111), we get a palindrome (655888556).

The spelling of 111444445 in words is "one hundred eleven million, four hundred forty-four thousand, four hundred forty-five".

Divisors: 1 5 7 35 461 2305 3227 6907 16135 34535 48349 241745 3184127 15920635 22288889 111444445