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84256 = 252633
BaseRepresentation
bin10100100100100000
311021120121
4110210200
510144011
61450024
7500434
oct244440
9137517
1084256
1158337
1240914
132c473
14229c4
1519e71
hex14920

84256 has 12 divisors (see below), whose sum is σ = 165942. Its totient is φ = 42112.

The previous prime is 84247. The next prime is 84263. The reversal of 84256 is 65248.

It can be written as a sum of positive squares in only one way, i.e., 80656 + 3600 = 284^2 + 60^2 .

It is a pancake number, because a pancake can be divided into 84256 parts by 410 straight cuts.

It is a self number, because there is not a number n which added to its sum of digits gives 84256.

It is an unprimeable number.

84256 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1285 + ... + 1348.

284256 is an apocalyptic number.

It is an amenable number.

84256 is a deficient number, since it is larger than the sum of its proper divisors (81686).

84256 is a wasteful number, since it uses less digits than its factorization.

84256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2643 (or 2635 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 84256 is about 290.2688409044. The cubic root of 84256 is about 43.8396366319.

The spelling of 84256 in words is "eighty-four thousand, two hundred fifty-six".

Divisors: 1 2 4 8 16 32 2633 5266 10532 21064 42128 84256