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28264 = 233533
BaseRepresentation
bin110111001101000
31102202211
412321220
51401024
6334504
7145255
oct67150
942684
1028264
111a265
1214434
13cb32
14a42c
158594
hex6e68

28264 has 8 divisors (see below), whose sum is σ = 53010. Its totient is φ = 14128.

The previous prime is 28229. The next prime is 28277. The reversal of 28264 is 46282.

It can be divided in two parts, 28 and 264, that added together give a palindrome (292).

It can be written as a sum of positive squares in only one way, i.e., 20164 + 8100 = 142^2 + 90^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a d-powerful number, because it can be written as 213 + 8 + 213 + 65 + 46 .

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1759 + ... + 1774.

228264 is an apocalyptic number.

It is an amenable number.

28264 is a deficient number, since it is larger than the sum of its proper divisors (24746).

28264 is a wasteful number, since it uses less digits than its factorization.

28264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3539 (or 3535 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 28264 is about 168.1190054693. The cubic root of 28264 is about 30.4610269928.

The spelling of 28264 in words is "twenty-eight thousand, two hundred sixty-four".

Divisors: 1 2 4 8 3533 7066 14132 28264