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68828 = 2217207
BaseRepresentation
bin10000110011011100
310111102012
4100303130
54200303
61250352
7404444
oct206334
9114365
1068828
1147791
12339b8
1325436
141b124
15155d8
hex10cdc

68828 has 6 divisors (see below), whose sum is σ = 120456. Its totient is φ = 34412.

The previous prime is 68821. The next prime is 68863. The reversal of 68828 is 82886.

It is a junction number, because it is equal to n+sod(n) for n = 68794 and 68803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68821) by changing a digit.

68828 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 as a sum of consecutive naturals, namely, 8600 + ... + 8607.

It is an arithmetic number, because the mean of its divisors is an integer number (20076).

268828 is an apocalyptic number.

It is an amenable number.

68828 is a deficient number, since it is larger than the sum of its proper divisors (51628).

68828 is a wasteful number, since it uses less digits than its factorization.

68828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17211 (or 17209 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 68828 is about 262.3509100423. The cubic root of 68828 is about 40.9815502951.

The spelling of 68828 in words is "sixty-eight thousand, eight hundred twenty-eight".

Divisors: 1 2 4 17207 34414 68828