Search a number
-
+
28057743835 = 5111075219151
BaseRepresentation
bin11010001000010111…
…110011000111011011
32200102101121001210121
4122020113303013123
5424430240300320
620520050454111
72012203613302
oct321027630733
980371531717
1028057743835
1110998957250
125530594337
132851b87ab4
141502501439
15ae33708aa
hex6885f31db

28057743835 has 32 divisors (see below), whose sum is σ = 37148626944. Its totient is φ = 20173920000.

The previous prime is 28057743799. The next prime is 28057743839. The reversal of 28057743835 is 53834775082.

It is not a de Polignac number, because 28057743835 - 217 = 28057612763 is a prime.

It is a super-3 number, since 3×280577438353 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (28057743839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3061510 + ... + 3070660.

It is an arithmetic number, because the mean of its divisors is an integer number (1160894592).

Almost surely, 228057743835 is an apocalyptic number.

28057743835 is a deficient number, since it is larger than the sum of its proper divisors (9090883109).

28057743835 is a wasteful number, since it uses less digits than its factorization.

28057743835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9795.

The product of its (nonzero) digits is 5644800, while the sum is 52.

The spelling of 28057743835 in words is "twenty-eight billion, fifty-seven million, seven hundred forty-three thousand, eight hundred thirty-five".

Divisors: 1 5 11 55 107 521 535 1177 2605 5731 5885 9151 28655 45755 55747 100661 278735 503305 613217 979157 3066085 4767671 4895785 10770727 23838355 52444381 53853635 262221905 510140797 2550703985 5611548767 28057743835