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30004049 = 34786467
BaseRepresentation
bin111001001110…
…1001101010001
32002110100211002
41302131031101
530140112144
62551031345
7513013235
oct162351521
962410732
1030004049
1115a33539
12a06b555
1362a6a9a
143db05c5
15297a14e
hex1c9d351

30004049 has 4 divisors (see below), whose sum is σ = 30090864. Its totient is φ = 29917236.

The previous prime is 30004043. The next prime is 30004057. The reversal of 30004049 is 94040003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94040003 = 864110883.

It is a cyclic number.

It is not a de Polignac number, because 30004049 - 24 = 30004033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30004049.

It is not an unprimeable number, because it can be changed into a prime (30004043) 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, 42887 + ... + 43580.

It is an arithmetic number, because the mean of its divisors is an integer number (7522716).

Almost surely, 230004049 is an apocalyptic number.

It is an amenable number.

30004049 is a deficient number, since it is larger than the sum of its proper divisors (86815).

30004049 is an equidigital number, since it uses as much as digits as its factorization.

30004049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86814.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 30004049 is about 5477.5951840201. The cubic root of 30004049 is about 310.7372290603.

The spelling of 30004049 in words is "thirty million, four thousand, forty-nine".

Divisors: 1 347 86467 30004049