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23693 = 192943
BaseRepresentation
bin101110010001101
31012111112
411302031
51224233
6301405
7126035
oct56215
935445
1023693
111688a
1211865
13aa27
1488c5
157048
hex5c8d

23693 has 8 divisors (see below), whose sum is σ = 26400. Its totient is φ = 21168.

The previous prime is 23689. The next prime is 23719. The reversal of 23693 is 39632.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23693 - 22 = 23689 is a prime.

It is a super-2 number, since 2×236932 = 1122716498, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530 + ... + 572.

It is an arithmetic number, because the mean of its divisors is an integer number (3300).

223693 is an apocalyptic number.

It is an amenable number.

23693 is a deficient number, since it is larger than the sum of its proper divisors (2707).

23693 is a wasteful number, since it uses less digits than its factorization.

23693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91.

The product of its digits is 972, while the sum is 23.

The square root of 23693 is about 153.9253065613. The cubic root of 23693 is about 28.7214713854.

Adding to 23693 its sum of digits (23), we get a square (23716 = 1542).

The spelling of 23693 in words is "twenty-three thousand, six hundred ninety-three".

Divisors: 1 19 29 43 551 817 1247 23693