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23843689 = 1922572
BaseRepresentation
bin101101011110…
…1001101101001
31122212101101121
41122331031221
522100444224
62211015241
7406445062
oct132751551
948771347
1023843689
1112506131
127b9a521
134c2aabc
143249569
15215ebe4
hex16bd369

23843689 has 9 divisors (see below), whose sum is σ = 25262967. Its totient is φ = 22500864.

The previous prime is 23843683. The next prime is 23843719. The reversal of 23843689 is 98634832.

The square root of 23843689 is 4883.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 23474025 + 369664 = 4845^2 + 608^2 .

It is not a de Polignac number, because 23843689 - 29 = 23843177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23843683) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 92649 + ... + 92905.

Almost surely, 223843689 is an apocalyptic number.

23843689 is the 4883-rd square number.

23843689 is the 2442-nd centered octagonal number.

It is an amenable number.

23843689 is a deficient number, since it is larger than the sum of its proper divisors (1419278).

23843689 is an frugal number, since it uses more digits than its factorization.

23843689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 276 counting only the distinct ones).

The product of its digits is 248832, while the sum is 43.

The cubic root of 23843689 is about 287.8223288471.

The spelling of 23843689 in words is "twenty-three million, eight hundred forty-three thousand, six hundred eighty-nine".

Divisors: 1 19 257 361 4883 66049 92777 1254931 23843689