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23000243 = 73285749
BaseRepresentation
bin101011110111…
…1010010110011
31121021112101212
41113233102303
521342001433
62140550335
7366333050
oct127572263
947245355
1023000243
1111a8a472
1278523ab
1349c3c16
1430aa027
152044d48
hex15ef4b3

23000243 has 4 divisors (see below), whose sum is σ = 26286000. Its totient is φ = 19714488.

The previous prime is 23000189. The next prime is 23000261. The reversal of 23000243 is 34200032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23000243 - 210 = 22999219 is a prime.

It is a super-2 number, since 2×230002432 = 1058022356118098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23000293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1642868 + ... + 1642881.

It is an arithmetic number, because the mean of its divisors is an integer number (6571500).

Almost surely, 223000243 is an apocalyptic number.

23000243 is a deficient number, since it is larger than the sum of its proper divisors (3285757).

23000243 is an equidigital number, since it uses as much as digits as its factorization.

23000243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3285756.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 23000243 is about 4795.8568577471. The cubic root of 23000243 is about 284.3876995174.

Adding to 23000243 its reverse (34200032), we get a palindrome (57200275).

The spelling of 23000243 in words is "twenty-three million, two hundred forty-three", and thus it is an aban number.

Divisors: 1 7 3285749 23000243