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30804163 = 1310921739
BaseRepresentation
bin111010110000…
…0100011000011
32010222000100221
41311200203003
530341213123
63020123511
7522555025
oct165404303
963860327
1030804163
111642a695
12a396597
1364c7020
14413c015
152a8725d
hex1d608c3

30804163 has 8 divisors (see below), whose sum is σ = 33479600. Its totient is φ = 28172448.

The previous prime is 30804143. The next prime is 30804167. The reversal of 30804163 is 36140803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30804163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30804167) 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 7 ways as a sum of consecutive naturals, for example, 9453 + ... + 12286.

It is an arithmetic number, because the mean of its divisors is an integer number (4184950).

Almost surely, 230804163 is an apocalyptic number.

30804163 is a deficient number, since it is larger than the sum of its proper divisors (2675437).

30804163 is a wasteful number, since it uses less digits than its factorization.

30804163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21861.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 30804163 is about 5550.1498177977. The cubic root of 30804163 is about 313.4751635209.

Adding to 30804163 its reverse (36140803), we get a palindrome (66944966).

The spelling of 30804163 in words is "thirty million, eight hundred four thousand, one hundred sixty-three".

Divisors: 1 13 109 1417 21739 282607 2369551 30804163