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14987 = 72141
BaseRepresentation
bin11101010001011
3202120002
43222023
5434422
6153215
761460
oct35213
922502
1014987
1110295
12880b
136a8b
145667
154692
hex3a8b

14987 has 4 divisors (see below), whose sum is σ = 17136. Its totient is φ = 12840.

The previous prime is 14983. The next prime is 15013. The reversal of 14987 is 78941.

It can be divided in two parts, 14 and 987, that added together give a palindrome (1001).

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

It is a cyclic number.

It is not a de Polignac number, because 14987 - 22 = 14983 is a prime.

It is a super-2 number, since 2×149872 = 449220338, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (14983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064 + ... + 1077.

It is an arithmetic number, because the mean of its divisors is an integer number (4284).

214987 is an apocalyptic number.

14987 is a deficient number, since it is larger than the sum of its proper divisors (2149).

14987 is an equidigital number, since it uses as much as digits as its factorization.

14987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148.

The product of its digits is 2016, while the sum is 29.

The square root of 14987 is about 122.4214033574. The cubic root of 14987 is about 24.6549940714.

The spelling of 14987 in words is "fourteen thousand, nine hundred eighty-seven".

Divisors: 1 7 2141 14987