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2986 = 21493
BaseRepresentation
bin101110101010
311002121
4232222
543421
621454
711464
oct5652
94077
102986
112275
12188a
131489
141134
15d41
hexbaa

2986 has 4 divisors (see below), whose sum is σ = 4482. Its totient is φ = 1492.

The previous prime is 2971. The next prime is 2999. The reversal of 2986 is 6892.

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

It can be written as a sum of positive squares in only one way, i.e., 2025 + 961 = 45^2 + 31^2 .

It is a plaindrome in base 12, base 13 and base 14.

It is a nialpdrome in base 15 and base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 2986.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745 + ... + 748.

2986 is a deficient number, since it is larger than the sum of its proper divisors (1496).

2986 is a wasteful number, since it uses less digits than its factorization.

2986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495.

The product of its digits is 864, while the sum is 25.

The square root of 2986 is about 54.6443043693. The cubic root of 2986 is about 14.4000257201.

The spelling of 2986 in words is "two thousand, nine hundred eighty-six".

Divisors: 1 2 1493 2986