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285674 = 2142837
BaseRepresentation
bin1000101101111101010
3112111212112
41011233222
533120144
610042322
72266604
oct1055752
9474775
10285674
111856a4
121193a2
13a004c
1476174
155999e
hex45bea

285674 has 4 divisors (see below), whose sum is σ = 428514. Its totient is φ = 142836.

The previous prime is 285673. The next prime is 285697. The reversal of 285674 is 476582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 476582 = 2238291.

It can be written as a sum of positive squares in only one way, i.e., 265225 + 20449 = 515^2 + 143^2 .

It is a d-powerful number, because it can be written as 218 + 82 + 65 + 56 + 72 + 42 .

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 285674.

It is not an unprimeable number, because it can be changed into a prime (285673) 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 as a sum of consecutive naturals, namely, 71417 + ... + 71420.

2285674 is an apocalyptic number.

285674 is a deficient number, since it is larger than the sum of its proper divisors (142840).

285674 is a wasteful number, since it uses less digits than its factorization.

285674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142839.

The product of its digits is 13440, while the sum is 32.

The square root of 285674 is about 534.4847986613. The cubic root of 285674 is about 65.8602798767.

It can be divided in two parts, 285 and 674, that added together give a palindrome (959).

The spelling of 285674 in words is "two hundred eighty-five thousand, six hundred seventy-four".

Divisors: 1 2 142837 285674