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30465081 = 329734897
BaseRepresentation
bin111010000110…
…1110000111001
32010022210020100
41310031300321
530244340311
63004550013
7516643323
oct164156071
963283210
1030465081
1116218959
12a252309
13640889a
144090613
152a1ba56
hex1d0dc39

30465081 has 12 divisors (see below), whose sum is σ = 44460052. Its totient is φ = 20100096.

The previous prime is 30465079. The next prime is 30465103. The reversal of 30465081 is 18056403.

30465081 is a `hidden beast` number, since 3 + 0 + 4 + 650 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6051600 + 24413481 = 2460^2 + 4941^2 .

It is not a de Polignac number, because 30465081 - 21 = 30465079 is a prime.

It is a super-2 number, since 2×304650812 = 1856242320673122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30465011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16576 + ... + 18321.

Almost surely, 230465081 is an apocalyptic number.

It is an amenable number.

30465081 is a deficient number, since it is larger than the sum of its proper divisors (13994971).

30465081 is a wasteful number, since it uses less digits than its factorization.

30465081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35000 (or 34997 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 30465081 is about 5519.5181854941. The cubic root of 30465081 is about 312.3207069658.

The spelling of 30465081 in words is "thirty million, four hundred sixty-five thousand, eighty-one".

Divisors: 1 3 9 97 291 873 34897 104691 314073 3385009 10155027 30465081