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30894 = 2319271
BaseRepresentation
bin111100010101110
31120101020
413202232
51442034
6355010
7156033
oct74256
946336
1030894
1121236
1215a66
13110a6
14b38a
159249
hex78ae

30894 has 16 divisors (see below), whose sum is σ = 65280. Its totient is φ = 9720.

The previous prime is 30893. The next prime is 30911. The reversal of 30894 is 49803.

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, 22 + ... + 249.

It is an arithmetic number, because the mean of its divisors is an integer number (4080).

230894 is an apocalyptic number.

30894 is an abundant number, since it is smaller than the sum of its proper divisors (34386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32640).

30894 is a wasteful number, since it uses less digits than its factorization.

30894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 30894 is about 175.7668910802. The cubic root of 30894 is about 31.3779606525.

The spelling of 30894 in words is "thirty thousand, eight hundred ninety-four".

Divisors: 1 2 3 6 19 38 57 114 271 542 813 1626 5149 10298 15447 30894