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30461009 = 194673433
BaseRepresentation
bin111010000110…
…0110001010001
32010022120122112
41310030301101
530244223014
63004515105
7516625415
oct164146121
963276575
1030461009
1116215897
12a24ba95
136406a87
14408cd45
152a1a73e
hex1d0cc51

30461009 has 8 divisors (see below), whose sum is σ = 32142240. Its totient is φ = 28787616.

The previous prime is 30460987. The next prime is 30461017. The reversal of 30461009 is 90016403.

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 30461009 - 212 = 30456913 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30461099) 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, 7157 + ... + 10589.

It is an arithmetic number, because the mean of its divisors is an integer number (4017780).

Almost surely, 230461009 is an apocalyptic number.

It is an amenable number.

30461009 is a deficient number, since it is larger than the sum of its proper divisors (1681231).

30461009 is a wasteful number, since it uses less digits than its factorization.

30461009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3919.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 30461009 is about 5519.1493003904. The cubic root of 30461009 is about 312.3067912899.

The spelling of 30461009 in words is "thirty million, four hundred sixty-one thousand, nine".

Divisors: 1 19 467 3433 8873 65227 1603211 30461009