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230345445 = 35111396033
BaseRepresentation
bin11011011101011…
…00101011100101
3121001102202112210
431232230223211
5432432023240
634505034033
75464622031
oct1556545345
9531382483
10230345445
11109029a40
1265185919
13389505a5
14228411c1
1515350780
hexdbacae5

230345445 has 16 divisors (see below), whose sum is σ = 402057792. Its totient is φ = 111682560.

The previous prime is 230345429. The next prime is 230345447. The reversal of 230345445 is 544543032.

It is not a de Polignac number, because 230345445 - 24 = 230345429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230345447) 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 15 ways as a sum of consecutive naturals, for example, 697852 + ... + 698181.

It is an arithmetic number, because the mean of its divisors is an integer number (25128612).

Almost surely, 2230345445 is an apocalyptic number.

It is an amenable number.

230345445 is a deficient number, since it is larger than the sum of its proper divisors (171712347).

230345445 is a wasteful number, since it uses less digits than its factorization.

230345445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396052.

The product of its (nonzero) digits is 28800, while the sum is 30.

The square root of 230345445 is about 15177.1355993152. The cubic root of 230345445 is about 612.9991555084. Note that the first 3 decimals are identical.

Adding to 230345445 its reverse (544543032), we get a palindrome (774888477).

The spelling of 230345445 in words is "two hundred thirty million, three hundred forty-five thousand, four hundred forty-five".

Divisors: 1 3 5 11 15 33 55 165 1396033 4188099 6980165 15356363 20940495 46069089 76781815 230345445