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23146387 = 112104217
BaseRepresentation
bin101100001001…
…0111110010011
31121112221212121
41120102332103
521411141022
62144035111
7400512115
oct130227623
947487777
1023146387
111207a250
127902a97
134a455b4
1431073b5
1520732c7
hex1612f93

23146387 has 4 divisors (see below), whose sum is σ = 25250616. Its totient is φ = 21042160.

The previous prime is 23146373. The next prime is 23146393. The reversal of 23146387 is 78364132.

It is a happy number.

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 23146387 - 211 = 23144339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23146327) 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, 1052098 + ... + 1052119.

It is an arithmetic number, because the mean of its divisors is an integer number (6312654).

Almost surely, 223146387 is an apocalyptic number.

23146387 is a deficient number, since it is larger than the sum of its proper divisors (2104229).

23146387 is a wasteful number, since it uses less digits than its factorization.

23146387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104228.

The product of its digits is 24192, while the sum is 34.

The square root of 23146387 is about 4811.0692158812. The cubic root of 23146387 is about 284.9887632791.

The spelling of 23146387 in words is "twenty-three million, one hundred forty-six thousand, three hundred eighty-seven".

Divisors: 1 11 2104217 23146387