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14987141 = 131152857
BaseRepresentation
bin111001001010…
…111110000101
31001012102111022
4321022332011
512314042031
61253120525
7241250201
oct71127605
931172438
1014987141
118507074
125029145
133149840
141dc1b01
1514b097b
hexe4af85

14987141 has 4 divisors (see below), whose sum is σ = 16140012. Its totient is φ = 13834272.

The previous prime is 14987131. The next prime is 14987153. The reversal of 14987141 is 14178941.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2356225 + 12630916 = 1535^2 + 3554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-14987141 is a prime.

It is a super-2 number, since 2×149871412 = 449228790707762, 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 (14987101) 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 3 ways as a sum of consecutive naturals, for example, 576416 + ... + 576441.

It is an arithmetic number, because the mean of its divisors is an integer number (4035003).

Almost surely, 214987141 is an apocalyptic number.

It is an amenable number.

14987141 is a deficient number, since it is larger than the sum of its proper divisors (1152871).

14987141 is a wasteful number, since it uses less digits than its factorization.

14987141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152870.

The product of its digits is 8064, while the sum is 35.

The square root of 14987141 is about 3871.3229005083. The cubic root of 14987141 is about 246.5507139051.

The spelling of 14987141 in words is "fourteen million, nine hundred eighty-seven thousand, one hundred forty-one".

Divisors: 1 13 1152857 14987141