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113881285 = 578936559
BaseRepresentation
bin1101100100110…
…11000011000101
321221021202202101
412302123003011
5213123200120
615144512101
72551655260
oct662330305
9257252671
10113881285
1159312771
123217b631
131a793b9b
14111a5cd7
159ee790a
hex6c9b0c5

113881285 has 16 divisors (see below), whose sum is σ = 157939200. Its totient is φ = 77210496.

The previous prime is 113881279. The next prime is 113881333. The reversal of 113881285 is 582188311.

It is a cyclic number.

It is not a de Polignac number, because 113881285 - 25 = 113881253 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 15165 + ... + 21394.

It is an arithmetic number, because the mean of its divisors is an integer number (9871200).

Almost surely, 2113881285 is an apocalyptic number.

It is an amenable number.

113881285 is a deficient number, since it is larger than the sum of its proper divisors (44057915).

113881285 is an equidigital number, since it uses as much as digits as its factorization.

113881285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36660.

The product of its digits is 15360, while the sum is 37.

The square root of 113881285 is about 10671.5174647282. The cubic root of 113881285 is about 484.7123883736.

The spelling of 113881285 in words is "one hundred thirteen million, eight hundred eighty-one thousand, two hundred eighty-five".

Divisors: 1 5 7 35 89 445 623 3115 36559 182795 255913 1279565 3253751 16268755 22776257 113881285