Search a number
-
+
28080303025 = 526416592659
BaseRepresentation
bin11010001001101101…
…110110101110110001
32200110222001012012011
4122021231312232301
5430002024144100
620522214202521
72012566431445
oct321155665661
980428035164
1028080303025
11109aa665305
125538053441
132856756028
1415054d4825
15ae5329bba
hex689b76bb1

28080303025 has 24 divisors (see below), whose sum is σ = 34939951200. Its totient is φ = 22386739200.

The previous prime is 28080302969. The next prime is 28080303049. The reversal of 28080303025 is 52030308082.

It is not a de Polignac number, because 28080303025 - 211 = 28080300977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10559146 + ... + 10561804.

It is an arithmetic number, because the mean of its divisors is an integer number (1455831300).

Almost surely, 228080303025 is an apocalyptic number.

28080303025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28080303025 is a deficient number, since it is larger than the sum of its proper divisors (6859648175).

28080303025 is a wasteful number, since it uses less digits than its factorization.

28080303025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3969 (or 3964 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 28080303025 in words is "twenty-eight billion, eighty million, three hundred three thousand, twenty-five".

Divisors: 1 5 25 641 659 2659 3205 3295 13295 16025 16475 66475 422419 1704419 1752281 2112095 8522095 8761405 10560475 42610475 43807025 1123212121 5616060605 28080303025