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97869 = 31719101
BaseRepresentation
bin10111111001001101
311222020210
4113321031
511112434
62033033
7555222
oct277115
9158223
1097869
1167592
1248779
1335715
1427949
151dee9
hex17e4d

97869 has 16 divisors (see below), whose sum is σ = 146880. Its totient is φ = 57600.

The previous prime is 97861. The next prime is 97871. The reversal of 97869 is 96879.

It is not a de Polignac number, because 97869 - 23 = 97861 is a prime.

It is a super-2 number, since 2×978692 = 19156682322, which contains 22 as substring.

It is a Curzon number.

It is a nialpdrome in base 7.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 919 + ... + 1019.

It is an arithmetic number, because the mean of its divisors is an integer number (9180).

297869 is an apocalyptic number.

It is an amenable number.

97869 is a deficient number, since it is larger than the sum of its proper divisors (49011).

97869 is a wasteful number, since it uses less digits than its factorization.

97869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140.

The product of its digits is 27216, while the sum is 39.

The square root of 97869 is about 312.8402148062. The cubic root of 97869 is about 46.0838106597.

Subtracting from 97869 its reverse (96879), we obtain a triangular number (990 = T44).

The spelling of 97869 in words is "ninety-seven thousand, eight hundred sixty-nine".

Divisors: 1 3 17 19 51 57 101 303 323 969 1717 1919 5151 5757 32623 97869