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30000004 = 2223326087
BaseRepresentation
bin111001001110…
…0001110000100
32002110011021021
41302130032010
530140000004
62551000524
7512665366
oct162341604
962404237
1030000004
1115a304a1
12a069144
1362a4ca8
143dacd36
152978d54
hex1c9c384

30000004 has 12 divisors (see below), whose sum is σ = 54782784. Its totient is φ = 14347784.

The previous prime is 30000001. The next prime is 30000023. The reversal of 30000004 is 40000003.

It is not an unprimeable number, because it can be changed into a prime (30000001) 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, 162952 + ... + 163135.

It is an arithmetic number, because the mean of its divisors is an integer number (4565232).

Almost surely, 230000004 is an apocalyptic number.

It is an amenable number.

30000004 is a deficient number, since it is larger than the sum of its proper divisors (24782780).

30000004 is a wasteful number, since it uses less digits than its factorization.

30000004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326114 (or 326112 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 7.

The square root of 30000004 is about 5477.2259402000. The cubic root of 30000004 is about 310.7232644053.

Subtracting from 30000004 its product of nonzero digits (12), we obtain a palindrome (29999992).

Adding to 30000004 its reverse (40000003), we get a palindrome (70000007).

Subtracting 30000004 from its reverse (40000003), we obtain a palindrome (9999999).

The spelling of 30000004 in words is "thirty million, four", and thus it is an aban number and an eban number.

Divisors: 1 2 4 23 46 92 326087 652174 1304348 7500001 15000002 30000004