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30007019 = 723186379
BaseRepresentation
bin111001001110…
…1111011101011
32002110111220002
41302131323223
530140211034
62551053215
7513025010
oct162357353
962414802
1030007019
1115a35799
12a07120b
1362a8243
143db1707
15297ae7e
hex1c9deeb

30007019 has 8 divisors (see below), whose sum is σ = 35784960. Its totient is φ = 24601896.

The previous prime is 30007013. The next prime is 30007049. The reversal of 30007019 is 91070003.

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

It is a cyclic number.

It is not a de Polignac number, because 30007019 - 28 = 30006763 is a prime.

It is a super-2 number, since 2×300070192 = 1800842378532722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30007013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93029 + ... + 93350.

It is an arithmetic number, because the mean of its divisors is an integer number (4473120).

Almost surely, 230007019 is an apocalyptic number.

30007019 is a deficient number, since it is larger than the sum of its proper divisors (5777941).

30007019 is a wasteful number, since it uses less digits than its factorization.

30007019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186409.

The product of its (nonzero) digits is 189, while the sum is 20.

The square root of 30007019 is about 5477.8662816830. The cubic root of 30007019 is about 310.7474816668.

The spelling of 30007019 in words is "thirty million, seven thousand, nineteen".

Divisors: 1 7 23 161 186379 1304653 4286717 30007019