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230284057 = 1713546121
BaseRepresentation
bin11011011100111…
…01101100011001
3121001022122100011
431232131230121
5432423042212
634503441521
75464245043
oct1556355431
9531278304
10230284057
11108a97903
12651562a1
133892b673
1422826a93
151533c4a7
hexdb9db19

230284057 has 4 divisors (see below), whose sum is σ = 243830196. Its totient is φ = 216737920.

The previous prime is 230284031. The next prime is 230284063. The reversal of 230284057 is 750482032.

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

It can be written as a sum of positive squares in 2 ways, for example, as 214886281 + 15397776 = 14659^2 + 3924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-230284057 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230284007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6773044 + ... + 6773077.

It is an arithmetic number, because the mean of its divisors is an integer number (60957549).

Almost surely, 2230284057 is an apocalyptic number.

It is an amenable number.

230284057 is a deficient number, since it is larger than the sum of its proper divisors (13546139).

230284057 is a wasteful number, since it uses less digits than its factorization.

230284057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13546138.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 230284057 is about 15175.1130803036. The cubic root of 230284057 is about 612.9446950789.

The spelling of 230284057 in words is "two hundred thirty million, two hundred eighty-four thousand, fifty-seven".

Divisors: 1 17 13546121 230284057