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117028 = 22171721
BaseRepresentation
bin11100100100100100
312221112101
4130210210
512221103
62301444
7665122
oct344444
9187471
10117028
117aa1a
1257884
1341362
1430912
1524a1d
hex1c924

117028 has 12 divisors (see below), whose sum is σ = 216972. Its totient is φ = 55040.

The previous prime is 117023. The next prime is 117037. The reversal of 117028 is 820711.

It can be written as a sum of positive squares in 2 ways, for example, as 88804 + 28224 = 298^2 + 168^2 .

It is a plaindrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 116996 and 117014.

It is not an unprimeable number, because it can be changed into a prime (117023) by changing a digit.

117028 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 793 + ... + 928.

It is an arithmetic number, because the mean of its divisors is an integer number (18081).

2117028 is an apocalyptic number.

It is an amenable number.

117028 is a deficient number, since it is larger than the sum of its proper divisors (99944).

117028 is a wasteful number, since it uses less digits than its factorization.

117028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742 (or 1740 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 117028 is about 342.0935544555. The cubic root of 117028 is about 48.9136337850.

Adding to 117028 its reverse (820711), we get a palindrome (937739).

The spelling of 117028 in words is "one hundred seventeen thousand, twenty-eight".

Divisors: 1 2 4 17 34 68 1721 3442 6884 29257 58514 117028