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14091181 = 131763761
BaseRepresentation
bin110101110000…
…001110101101
3222111220110121
4311300032231
512101404211
61222004541
7230526106
oct65601655
928456417
1014091181
117a54a05
124876751
132bc4aa0
141c2b3ad
151385271
hexd703ad

14091181 has 8 divisors (see below), whose sum is σ = 16068024. Its totient is φ = 12241920.

The previous prime is 14091173. The next prime is 14091197. The reversal of 14091181 is 18119041.

It can be written as a sum of positive squares in 4 ways, for example, as 2975625 + 11115556 = 1725^2 + 3334^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 14091181 - 23 = 14091173 is a prime.

It is a super-2 number, since 2×140911812 = 397122763949522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14091101) 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 7 ways as a sum of consecutive naturals, for example, 31660 + ... + 32101.

It is an arithmetic number, because the mean of its divisors is an integer number (2008503).

Almost surely, 214091181 is an apocalyptic number.

It is an amenable number.

14091181 is a deficient number, since it is larger than the sum of its proper divisors (1976843).

14091181 is a wasteful number, since it uses less digits than its factorization.

14091181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63791.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 14091181 is about 3753.8221854531. The cubic root of 14091181 is about 241.5363307238.

The spelling of 14091181 in words is "fourteen million, ninety-one thousand, one hundred eighty-one".

Divisors: 1 13 17 221 63761 828893 1083937 14091181