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84388 = 2217273
BaseRepresentation
bin10100100110100100
311021202111
4110212210
510200023
61450404
7501013
oct244644
9137674
1084388
1158447
1240a04
132c545
1422a7a
151a00d
hex149a4

84388 has 18 divisors (see below), whose sum is σ = 159026. Its totient is φ = 39168.

The previous prime is 84377. The next prime is 84389. The reversal of 84388 is 88348.

84388 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 3 ways, for example, as 36864 + 47524 = 192^2 + 218^2 .

It is not an unprimeable number, because it can be changed into a prime (84389) by changing a digit.

84388 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 (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1120 + ... + 1192.

284388 is an apocalyptic number.

It is an amenable number.

84388 is a deficient number, since it is larger than the sum of its proper divisors (74638).

84388 is a wasteful number, since it uses less digits than its factorization.

84388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 92 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 84388 is about 290.4961273408. The cubic root of 84388 is about 43.8625185341.

The spelling of 84388 in words is "eighty-four thousand, three hundred eighty-eight".

Divisors: 1 2 4 17 34 68 73 146 289 292 578 1156 1241 2482 4964 21097 42194 84388