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68922 = 2327547
BaseRepresentation
bin10000110100111010
310111112200
4100310322
54201142
61251030
7404640
oct206472
9114480
1068922
1147867
1233a76
13254a9
141b190
151564c
hex10d3a

68922 has 24 divisors (see below), whose sum is σ = 170976. Its totient is φ = 19656.

The previous prime is 68917. The next prime is 68927. The reversal of 68922 is 22986.

It is a Cunningham number, because it is equal to 413+1.

It is an interprime number because it is at equal distance from previous prime (68917) and next prime (68927).

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 68922.

It is not an unprimeable number, because it can be changed into a prime (68927) by changing a digit.

68922 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 11 ways as a sum of consecutive naturals, for example, 148 + ... + 399.

It is an arithmetic number, because the mean of its divisors is an integer number (7124).

268922 is an apocalyptic number.

68922 is an abundant number, since it is smaller than the sum of its proper divisors (102054).

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 (85488).

68922 is a wasteful number, since it uses less digits than its factorization.

68922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 559 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 68922 is about 262.5299982859. The cubic root of 68922 is about 41.0001982937. Note that the first 3 decimals are identical.

It can be divided in two parts, 68 and 922, that added together give a triangular number (990 = T44).

The spelling of 68922 in words is "sixty-eight thousand, nine hundred twenty-two".

Divisors: 1 2 3 6 7 9 14 18 21 42 63 126 547 1094 1641 3282 3829 4923 7658 9846 11487 22974 34461 68922