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982081 = 9912
BaseRepresentation
bin11101111110001000001
31211220011101
43233301001
5222411311
633014401
711230132
oct3576101
91756141
10982081
11610941
123b4401
13285019
141b7c89
15145ec1
hexefc41

982081 has 3 divisors (see below), whose sum is σ = 983073. Its totient is φ = 981090.

The previous prime is 982067. The next prime is 982087. The reversal of 982081 is 180289.

The square root of 982081 is 991.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 982081 - 29 = 981569 is a prime.

It is a super-2 number, since 2×9820812 = 1928966181122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (982087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 496 + ... + 1486.

It is an arithmetic number, because the mean of its divisors is an integer number (327691).

2982081 is an apocalyptic number.

982081 is the 991-st square number.

982081 is the 496-th centered octagonal number.

It is an amenable number.

982081 is a deficient number, since it is larger than the sum of its proper divisors (992).

982081 is an frugal number, since it uses more digits than its factorization.

982081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982 (or 991 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The cubic root of 982081 is about 99.3990963810.

The spelling of 982081 in words is "nine hundred eighty-two thousand, eighty-one".

Divisors: 1 991 982081