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23384789 = 40275807
BaseRepresentation
bin101100100110…
…1001011010101
31122000001220022
41121031023111
521441303124
62153114525
7402524141
oct131151325
948001808
1023384789
111222237a
1279b8a45
134ac9c6c
14316a221
1520bdc5e
hex164d2d5

23384789 has 4 divisors (see below), whose sum is σ = 23394624. Its totient is φ = 23374956.

The previous prime is 23384783. The next prime is 23384821. The reversal of 23384789 is 98748332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23384789 - 216 = 23319253 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23384783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1124 + ... + 6930.

It is an arithmetic number, because the mean of its divisors is an integer number (5848656).

Almost surely, 223384789 is an apocalyptic number.

It is an amenable number.

23384789 is a deficient number, since it is larger than the sum of its proper divisors (9835).

23384789 is an equidigital number, since it uses as much as digits as its factorization.

23384789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9834.

The product of its digits is 290304, while the sum is 44.

The square root of 23384789 is about 4835.7821497665. The cubic root of 23384789 is about 285.9638608223.

The spelling of 23384789 in words is "twenty-three million, three hundred eighty-four thousand, seven hundred eighty-nine".

Divisors: 1 4027 5807 23384789