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30417 = 310139
BaseRepresentation
bin111011011010001
31112201120
413123101
51433132
6352453
7154452
oct73321
945646
1030417
1120942
1215729
1310aca
14b129
15902c
hex76d1

30417 has 4 divisors (see below), whose sum is σ = 40560. Its totient is φ = 20276.

The previous prime is 30403. The next prime is 30427. The reversal of 30417 is 71403.

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: 71403 = 323801.

It is a cyclic number.

It is not a de Polignac number, because 30417 - 28 = 30161 is a prime.

It is an Ulam number.

It is a D-number.

It is a nialpdrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 30396 and 30405.

It is not an unprimeable number, because it can be changed into a prime (30427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5067 + ... + 5072.

It is an arithmetic number, because the mean of its divisors is an integer number (10140).

230417 is an apocalyptic number.

It is an amenable number.

30417 is a deficient number, since it is larger than the sum of its proper divisors (10143).

30417 is a wasteful number, since it uses less digits than its factorization.

30417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10142.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 30417 is about 174.4047017715. The cubic root of 30417 is about 31.2156315491.

The spelling of 30417 in words is "thirty thousand, four hundred seventeen".

Divisors: 1 3 10139 30417