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4287 = 31429
BaseRepresentation
bin1000010111111
312212210
41002333
5114122
631503
715333
oct10277
95783
104287
113248
122593
131c4a
1417c3
15140c
hex10bf

4287 has 4 divisors (see below), whose sum is σ = 5720. Its totient is φ = 2856.

The previous prime is 4283. The next prime is 4289. The reversal of 4287 is 7824.

It can be divided in two parts, 428 and 7, that added together give a triangular number (435 = T29).

It is a happy number.

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

It is not a de Polignac number, because 4287 - 22 = 4283 is a prime.

It is a D-number.

It is a Duffinian number.

4287 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4283) 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, 712 + ... + 717.

It is an arithmetic number, because the mean of its divisors is an integer number (1430).

24287 is an apocalyptic number.

4287 is a deficient number, since it is larger than the sum of its proper divisors (1433).

4287 is a wasteful number, since it uses less digits than its factorization.

4287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432.

The product of its digits is 448, while the sum is 21.

The square root of 4287 is about 65.4751861395. The cubic root of 4287 is about 16.2449293844.

The spelling of 4287 in words is "four thousand, two hundred eighty-seven".

Divisors: 1 3 1429 4287