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BaseRepresentation
bin111100010101111
31120101021
413202233
51442040
6355011
7156034
oct74257
946337
1030895
1121237
1215a67
13110a7
14b38b
15924a
hex78af

30895 has 8 divisors (see below), whose sum is σ = 38304. Its totient is φ = 23904.

The previous prime is 30893. The next prime is 30911. The reversal of 30895 is 59803.

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 30895 - 21 = 30893 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102 + ... + 268.

It is an arithmetic number, because the mean of its divisors is an integer number (4788).

230895 is an apocalyptic number.

30895 is a deficient number, since it is larger than the sum of its proper divisors (7409).

30895 is a wasteful number, since it uses less digits than its factorization.

30895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 30895 is about 175.7697357340. The cubic root of 30895 is about 31.3782992039.

The spelling of 30895 in words is "thirty thousand, eight hundred ninety-five".

Divisors: 1 5 37 167 185 835 6179 30895