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23693387 = 431972797
BaseRepresentation
bin101101001100…
…0100001001011
31122120202012212
41122120201023
522031142022
62203455335
7405250634
oct132304113
948522185
1023693387
1112413213
127b2754b
134ba7573
14320a88b
1521303e2
hex169884b

23693387 has 8 divisors (see below), whose sum is σ = 24376176. Its totient is φ = 23016672.

The previous prime is 23693353. The next prime is 23693389. The reversal of 23693387 is 78339632.

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 23693387 - 210 = 23692363 is a prime.

It is a super-2 number, since 2×236933872 = 1122753175063538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23693389) 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 7 ways as a sum of consecutive naturals, for example, 7073 + ... + 9869.

It is an arithmetic number, because the mean of its divisors is an integer number (3047022).

Almost surely, 223693387 is an apocalyptic number.

23693387 is a deficient number, since it is larger than the sum of its proper divisors (682789).

23693387 is a wasteful number, since it uses less digits than its factorization.

23693387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3037.

The product of its digits is 163296, while the sum is 41.

The square root of 23693387 is about 4867.5853356670. The cubic root of 23693387 is about 287.2162776277.

The spelling of 23693387 in words is "twenty-three million, six hundred ninety-three thousand, three hundred eighty-seven".

Divisors: 1 43 197 2797 8471 120271 551009 23693387