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23189825 = 521516143
BaseRepresentation
bin101100001110…
…1100101000001
31121122011110102
41120131211001
521414033300
62145012145
7401052551
oct130354501
947564412
1023189825
11120a994a
127924055
134a5c2b9
143119161
1520810d5
hex161d941

23189825 has 12 divisors (see below), whose sum is σ = 28950528. Its totient is φ = 18426000.

The previous prime is 23189801. The next prime is 23189833. The reversal of 23189825 is 52898132.

It is not a de Polignac number, because 23189825 - 214 = 23173441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 704 + ... + 6846.

It is an arithmetic number, because the mean of its divisors is an integer number (2412544).

Almost surely, 223189825 is an apocalyptic number.

23189825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23189825 is a deficient number, since it is larger than the sum of its proper divisors (5760703).

23189825 is a wasteful number, since it uses less digits than its factorization.

23189825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6304 (or 6299 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 23189825 is about 4815.5814809844. The cubic root of 23189825 is about 285.1669279607.

The spelling of 23189825 in words is "twenty-three million, one hundred eighty-nine thousand, eight hundred twenty-five".

Divisors: 1 5 25 151 755 3775 6143 30715 153575 927593 4637965 23189825