Search a number
-
+
22828 = 2213439
BaseRepresentation
bin101100100101100
31011022111
411210230
51212303
6253404
7123361
oct54454
934274
1022828
1116173
1211264
13a510
148468
156b6d
hex592c

22828 has 12 divisors (see below), whose sum is σ = 43120. Its totient is φ = 10512.

The previous prime is 22817. The next prime is 22853. The reversal of 22828 is 82822.

It is a super-2 number, since 2×228282 = 1042235168, which contains 22 as substring.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 22799 and 22808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168 + ... + 271.

222828 is an apocalyptic number.

It is an amenable number.

22828 is a deficient number, since it is larger than the sum of its proper divisors (20292).

22828 is a wasteful number, since it uses less digits than its factorization.

22828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 454 counting only the distinct ones).

The product of its digits is 512, while the sum is 22.

The square root of 22828 is about 151.0893775220. The cubic root of 22828 is about 28.3676017507.

It can be divided in two parts, 228 and 28, that added together give a 8-th power (256 = 28).

The spelling of 22828 in words is "twenty-two thousand, eight hundred twenty-eight".

Divisors: 1 2 4 13 26 52 439 878 1756 5707 11414 22828