Search a number
-
+
28055025255 = 352118864147
BaseRepresentation
bin11010001000001101…
…011011011001100111
32200102012110221121110
4122020031123121213
5424424041302010
620515512320103
72012141531355
oct321015333147
980365427543
1028055025255
111099736a794
12552b6a3033
13285144557a
141501dd47d5
15ae2ed5120
hex68835b667

28055025255 has 16 divisors (see below), whose sum is σ = 45100785024. Its totient is φ = 14891765280.

The previous prime is 28055025253. The next prime is 28055025287. The reversal of 28055025255 is 55252055082.

It is not a de Polignac number, because 28055025255 - 21 = 28055025253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28055025253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4428909 + ... + 4435238.

It is an arithmetic number, because the mean of its divisors is an integer number (2818799064).

Almost surely, 228055025255 is an apocalyptic number.

28055025255 is a deficient number, since it is larger than the sum of its proper divisors (17045759769).

28055025255 is a wasteful number, since it uses less digits than its factorization.

28055025255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8864366.

The product of its (nonzero) digits is 200000, while the sum is 39.

The spelling of 28055025255 in words is "twenty-eight billion, fifty-five million, twenty-five thousand, two hundred fifty-five".

Divisors: 1 3 5 15 211 633 1055 3165 8864147 26592441 44320735 132962205 1870335017 5611005051 9351675085 28055025255