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30470417 = 34787811
BaseRepresentation
bin111010000111…
…1000100010001
32010100001112222
41310033010101
530300023132
63005030425
7516665015
oct164170421
963301488
1030470417
111622196a
12a255415
13640b143
144092545
152a1d412
hex1d0f111

30470417 has 4 divisors (see below), whose sum is σ = 30558576. Its totient is φ = 30382260.

The previous prime is 30470393. The next prime is 30470449. The reversal of 30470417 is 71407403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71407403 = 162743889.

It is a cyclic number.

It is not a de Polignac number, because 30470417 - 28 = 30470161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30470017) 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, 43559 + ... + 44252.

It is an arithmetic number, because the mean of its divisors is an integer number (7639644).

Almost surely, 230470417 is an apocalyptic number.

It is an amenable number.

30470417 is a deficient number, since it is larger than the sum of its proper divisors (88159).

30470417 is an equidigital number, since it uses as much as digits as its factorization.

30470417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88158.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 30470417 is about 5520.0015398549. The cubic root of 30470417 is about 312.3389403656.

The spelling of 30470417 in words is "thirty million, four hundred seventy thousand, four hundred seventeen".

Divisors: 1 347 87811 30470417