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7028 = 227251
BaseRepresentation
bin1101101110100
3100122022
41231310
5211103
652312
726330
oct15564
910568
107028
11530a
124098
133278
1427c0
152138
hex1b74

7028 has 12 divisors (see below), whose sum is σ = 14112. Its totient is φ = 3000.

The previous prime is 7027. The next prime is 7039. The reversal of 7028 is 8207.

7028 is an admirable number.

It is a hoax number, since the sum of its digits (17) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6997 and 7015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98 + ... + 153.

It is an arithmetic number, because the mean of its divisors is an integer number (1176).

27028 is an apocalyptic number.

It is an amenable number.

7028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7056).

7028 is a wasteful number, since it uses less digits than its factorization.

7028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 7028 is about 83.8331676605. The cubic root of 7028 is about 19.1547836445.

Adding to 7028 its product of nonzero digits (112), we get a triangular number (7140 = T119).

The spelling of 7028 in words is "seven thousand, twenty-eight".

Divisors: 1 2 4 7 14 28 251 502 1004 1757 3514 7028