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23689433 = 291137229
BaseRepresentation
bin101101001011…
…1100011011001
31122120112210102
41122113203121
522031030213
62203425145
7405233255
oct132274331
948515712
1023689433
1112410249
127b251b5
134ba5821
143209265
15212e158
hex16978d9

23689433 has 8 divisors (see below), whose sum is σ = 24726600. Its totient is φ = 22667008.

The previous prime is 23689427. The next prime is 23689453. The reversal of 23689433 is 33498632.

It can be written as a sum of positive squares in 4 ways, for example, as 4443664 + 19245769 = 2108^2 + 4387^2 .

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 23689433 - 24 = 23689417 is a prime.

It is a super-2 number, since 2×236894332 = 1122378471722978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23689423) 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, 338 + ... + 6891.

It is an arithmetic number, because the mean of its divisors is an integer number (3090825).

Almost surely, 223689433 is an apocalyptic number.

It is an amenable number.

23689433 is a deficient number, since it is larger than the sum of its proper divisors (1037167).

23689433 is a wasteful number, since it uses less digits than its factorization.

23689433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7371.

The product of its digits is 93312, while the sum is 38.

The square root of 23689433 is about 4867.1791625129. The cubic root of 23689433 is about 287.2002996624.

The spelling of 23689433 in words is "twenty-three million, six hundred eighty-nine thousand, four hundred thirty-three".

Divisors: 1 29 113 3277 7229 209641 816877 23689433