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23838681 = 39078761
BaseRepresentation
bin101101011101…
…1111111011001
31122212010112010
41122323333121
522100314211
62210540133
7406424346
oct132737731
948763463
1023838681
1112502399
127b97649
134c28739
1432477cd
15215d4a6
hex16bbfd9

23838681 has 8 divisors (see below), whose sum is σ = 31823584. Its totient is φ = 15873120.

The previous prime is 23838653. The next prime is 23838691. The reversal of 23838681 is 18683832.

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

It is not a de Polignac number, because 23838681 - 29 = 23838169 is a prime.

It is a super-2 number, since 2×238386812 = 1136565423639522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23838611) 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, 1660 + ... + 7101.

It is an arithmetic number, because the mean of its divisors is an integer number (3977948).

Almost surely, 223838681 is an apocalyptic number.

It is an amenable number.

23838681 is a deficient number, since it is larger than the sum of its proper divisors (7984903).

23838681 is an equidigital number, since it uses as much as digits as its factorization.

23838681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9671.

The product of its digits is 55296, while the sum is 39.

The square root of 23838681 is about 4882.4871735623. The cubic root of 23838681 is about 287.8021765523.

The spelling of 23838681 in words is "twenty-three million, eight hundred thirty-eight thousand, six hundred eighty-one".

Divisors: 1 3 907 2721 8761 26283 7946227 23838681