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30007841 is a prime number
BaseRepresentation
bin111001001111…
…0001000100001
32002110120000112
41302132020201
530140222331
62551101105
7513030263
oct162361041
962416015
1030007841
1115a36376
12a071795
1362a8726
143db1b33
15297b32b
hex1c9e221

30007841 has 2 divisors, whose sum is σ = 30007842. Its totient is φ = 30007840.

The previous prime is 30007799. The next prime is 30007843. The reversal of 30007841 is 14870003.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25150225 + 4857616 = 5015^2 + 2204^2 .

It is a cyclic number.

It is not a de Polignac number, because 30007841 - 214 = 29991457 is a prime.

Together with 30007843, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30007843) 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 as a sum of consecutive naturals, namely, 15003920 + 15003921.

It is an arithmetic number, because the mean of its divisors is an integer number (15003921).

Almost surely, 230007841 is an apocalyptic number.

It is an amenable number.

30007841 is a deficient number, since it is larger than the sum of its proper divisors (1).

30007841 is an equidigital number, since it uses as much as digits as its factorization.

30007841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 30007841 is about 5477.9413103829. The cubic root of 30007841 is about 310.7503191373.

Adding to 30007841 its reverse (14870003), we get a palindrome (44877844).

The spelling of 30007841 in words is "thirty million, seven thousand, eight hundred forty-one".