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30030243 = 310010081
BaseRepresentation
bin111001010001…
…1100110100011
32002111200202020
41302203212203
530141431433
62551352523
7513152505
oct162434643
962450666
1030030243
1115a51191
12a082743
1362b5999
143db9d75
152982cb3
hex1ca39a3

30030243 has 4 divisors (see below), whose sum is σ = 40040328. Its totient is φ = 20020160.

The previous prime is 30030181. The next prime is 30030269. The reversal of 30030243 is 34203003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34203003 = 311401001.

It is a cyclic number.

It is not a de Polignac number, because 30030243 - 26 = 30030179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30030043) 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, 5005038 + ... + 5005043.

It is an arithmetic number, because the mean of its divisors is an integer number (10010082).

Almost surely, 230030243 is an apocalyptic number.

30030243 is a deficient number, since it is larger than the sum of its proper divisors (10010085).

30030243 is a wasteful number, since it uses less digits than its factorization.

30030243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010084.

The product of its (nonzero) digits is 216, while the sum is 15.

The square root of 30030243 is about 5479.9856751638. The cubic root of 30030243 is about 310.8276288983.

Adding to 30030243 its reverse (34203003), we get a palindrome (64233246).

The spelling of 30030243 in words is "thirty million, thirty thousand, two hundred forty-three".

Divisors: 1 3 10010081 30030243