Search a number
-
+
28821483 = 3237412111
BaseRepresentation
bin110110111110…
…0011111101011
32000020021122100
41231330133223
524334241413
62505424443
7466656435
oct155743753
960207570
1028821483
11152a6009
12979b123
135c81742
143b83655
1527e4a73
hex1b7c7eb

28821483 has 24 divisors (see below), whose sum is σ = 43819776. Its totient is φ = 18230400.

The previous prime is 28821479. The next prime is 28821503. The reversal of 28821483 is 38412882.

It is a happy number.

It is not a de Polignac number, because 28821483 - 22 = 28821479 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28821433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12598 + ... + 14708.

It is an arithmetic number, because the mean of its divisors is an integer number (1825824).

Almost surely, 228821483 is an apocalyptic number.

28821483 is a deficient number, since it is larger than the sum of its proper divisors (14998293).

28821483 is a wasteful number, since it uses less digits than its factorization.

28821483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195 (or 2192 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 28821483 is about 5368.5643332273. The cubic root of 28821483 is about 306.5999698735.

The spelling of 28821483 in words is "twenty-eight million, eight hundred twenty-one thousand, four hundred eighty-three".

Divisors: 1 3 9 37 41 111 123 333 369 1517 2111 4551 6333 13653 18999 78107 86551 234321 259653 702963 778959 3202387 9607161 28821483