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28894 = 214447
BaseRepresentation
bin111000011011110
31110122011
413003132
51411034
6341434
7150145
oct70336
943564
1028894
111a788
121487a
13101c8
14a75c
158864
hex70de

28894 has 4 divisors (see below), whose sum is σ = 43344. Its totient is φ = 14446.

The previous prime is 28879. The next prime is 28901. The reversal of 28894 is 49882.

It is a semiprime because it is the product of two primes.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7222 + ... + 7225.

It is an arithmetic number, because the mean of its divisors is an integer number (10836).

228894 is an apocalyptic number.

28894 is a deficient number, since it is larger than the sum of its proper divisors (14450).

28894 is a wasteful number, since it uses less digits than its factorization.

28894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14449.

The product of its digits is 4608, while the sum is 31.

The square root of 28894 is about 169.9823520251. The cubic root of 28894 is about 30.6856897305.

It can be divided in two parts, 288 and 94, that multiplied together give a palindrome (27072).

The spelling of 28894 in words is "twenty-eight thousand, eight hundred ninety-four".

Divisors: 1 2 14447 28894