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23538869 = 471812767
BaseRepresentation
bin101100111001…
…0110010110101
31122021220020222
41121302302311
522011220434
62200304125
7404035304
oct131626265
948256228
1023538869
1112318112
127a72045
134b52133
1431aa43b
1520ee72e
hex1672cb5

23538869 has 8 divisors (see below), whose sum is σ = 24181248. Its totient is φ = 22902480.

The previous prime is 23538857. The next prime is 23538881. The reversal of 23538869 is 96883532.

It is an interprime number because it is at equal distance from previous prime (23538857) and next prime (23538881).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23538869 is a prime.

It is a super-3 number, since 3×235388693 (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23538839) 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, 7124 + ... + 9890.

It is an arithmetic number, because the mean of its divisors is an integer number (3022656).

Almost surely, 223538869 is an apocalyptic number.

It is an amenable number.

23538869 is a deficient number, since it is larger than the sum of its proper divisors (642379).

23538869 is a wasteful number, since it uses less digits than its factorization.

23538869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2995.

The product of its digits is 311040, while the sum is 44.

The square root of 23538869 is about 4851.6872322935. The cubic root of 23538869 is about 286.5905487165.

The spelling of 23538869 in words is "twenty-three million, five hundred thirty-eight thousand, eight hundred sixty-nine".

Divisors: 1 47 181 2767 8507 130049 500827 23538869