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43030069 = 73589453
BaseRepresentation
bin1010010000100…
…1011000110101
32222222011011021
42210021120311
542003430234
64134141141
71031515045
oct244113065
988864137
1043030069
1122320145
12124b17b1
138bb7aa4
145a01725
153b9e9b4
hex2909635

43030069 has 4 divisors (see below), whose sum is σ = 43619596. Its totient is φ = 42440544.

The previous prime is 43030067. The next prime is 43030081. The reversal of 43030069 is 96003034.

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 8631844 + 34398225 = 2938^2 + 5865^2 .

It is a cyclic number.

It is not a de Polignac number, because 43030069 - 21 = 43030067 is a prime.

It is a super-2 number, since 2×430300692 = 3703173676289522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43030063) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 294654 + ... + 294799.

It is an arithmetic number, because the mean of its divisors is an integer number (10904899).

Almost surely, 243030069 is an apocalyptic number.

It is an amenable number.

43030069 is a deficient number, since it is larger than the sum of its proper divisors (589527).

43030069 is an equidigital number, since it uses as much as digits as its factorization.

43030069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589526.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 43030069 is about 6559.7308633815. The cubic root of 43030069 is about 350.4214487758.

The spelling of 43030069 in words is "forty-three million, thirty thousand, sixty-nine".

Divisors: 1 73 589453 43030069