Search a number
-
+
57284 = 2214321
BaseRepresentation
bin1101111111000100
32220120122
431333010
53313114
61121112
7326003
oct157704
986518
1057284
113a047
1229198
13200c6
1416c3a
1511e8e
hexdfc4

57284 has 6 divisors (see below), whose sum is σ = 100254. Its totient is φ = 28640.

The previous prime is 57283. The next prime is 57287. The reversal of 57284 is 48275.

It can be written as a sum of positive squares in only one way, i.e., 31684 + 25600 = 178^2 + 160^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 57284.

It is not an unprimeable number, because it can be changed into a prime (57283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7157 + ... + 7164.

It is an arithmetic number, because the mean of its divisors is an integer number (16709).

257284 is an apocalyptic number.

It is an amenable number.

57284 is a deficient number, since it is larger than the sum of its proper divisors (42970).

57284 is a wasteful number, since it uses less digits than its factorization.

57284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14325 (or 14323 counting only the distinct ones).

The product of its digits is 2240, while the sum is 26.

The square root of 57284 is about 239.3407612589. The cubic root of 57284 is about 38.5488220787.

Subtracting from 57284 its reverse (48275), we obtain a palindrome (9009).

It can be divided in two parts, 572 and 84, that added together give a palindrome (656).

The spelling of 57284 in words is "fifty-seven thousand, two hundred eighty-four".

Divisors: 1 2 4 14321 28642 57284