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30180009 = 312837841
BaseRepresentation
bin111001100100…
…0001010101001
32002210022012010
41303020022221
530211230014
62554510133
7514345236
oct163101251
962708163
1030180009
1116043762
12a135349
136338bc2
14401878d
1529b2359
hex1cc82a9

30180009 has 8 divisors (see below), whose sum is σ = 40276512. Its totient is φ = 20101760.

The previous prime is 30180001. The next prime is 30180047. The reversal of 30180009 is 90008103.

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 30180009 - 23 = 30180001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30180001) 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, 72 + ... + 7769.

It is an arithmetic number, because the mean of its divisors is an integer number (5034564).

Almost surely, 230180009 is an apocalyptic number.

It is an amenable number.

30180009 is a deficient number, since it is larger than the sum of its proper divisors (10096503).

30180009 is a wasteful number, since it uses less digits than its factorization.

30180009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9127.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 30180009 is about 5493.6334970582. The cubic root of 30180009 is about 311.3434892787.

The spelling of 30180009 in words is "thirty million, one hundred eighty thousand, nine".

Divisors: 1 3 1283 3849 7841 23523 10060003 30180009