Search a number
BaseRepresentation
bin10011000111001010
310222101100
4103013022
510001112
61402230
7444141
oct230712
9128340
1078282
11538a6
1239376
1329829
1420758
15182dc
hex131ca

78282 has 12 divisors (see below), whose sum is σ = 169650. Its totient is φ = 26088.

The previous prime is 78277. The next prime is 78283. The reversal of 78282 is 28287.

It can be written as a sum of positive squares in only one way, i.e., 77841 + 441 = 279^2 + 21^2 .

It is a super-2 number, since 2×782822 = 12256143048, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 78282.

It is not an unprimeable number, because it can be changed into a prime (78283) by changing a digit.

78282 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2157 + ... + 2192.

278282 is an apocalyptic number.

78282 is an abundant number, since it is smaller than the sum of its proper divisors (91368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78282 is a wasteful number, since it uses less digits than its factorization.

78282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4357 (or 4354 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 78282 is about 279.7892063679. The cubic root of 78282 is about 42.7780159029.

The spelling of 78282 in words is "seventy-eight thousand, two hundred eighty-two".

Divisors: 1 2 3 6 9 18 4349 8698 13047 26094 39141 78282