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28750316769 = 3371127269439
BaseRepresentation
bin11010110001101001…
…110000010011100001
32202012122210102021000
4122301221300103201
5432340040114034
621112511022213
72035313442336
oct326151602341
982178712230
1028750316769
1111213893579
1256a450a969
1329324c6775
14156a4a498d
15b34077599
hex6b1a704e1

28750316769 has 64 divisors (see below), whose sum is σ = 43794432000. Its totient is φ = 18635883840.

The previous prime is 28750316759. The next prime is 28750316783. The reversal of 28750316769 is 96761305782.

It is not a de Polignac number, because 28750316769 - 212 = 28750312673 is a prime.

It is a super-3 number, since 3×287503167693 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28750316759) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65490252 + ... + 65490690.

It is an arithmetic number, because the mean of its divisors is an integer number (684288000).

Almost surely, 228750316769 is an apocalyptic number.

It is an amenable number.

28750316769 is a deficient number, since it is larger than the sum of its proper divisors (15044115231).

28750316769 is a wasteful number, since it uses less digits than its factorization.

28750316769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915 (or 909 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 28750316769 in words is "twenty-eight billion, seven hundred fifty million, three hundred sixteen thousand, seven hundred sixty-nine".

Divisors: 1 3 9 27 71 127 213 269 381 439 639 807 1143 1317 1917 2421 3429 3951 7263 9017 11853 19099 27051 31169 34163 55753 57297 81153 93507 102489 118091 167259 171891 243459 280521 307467 354273 501777 515673 841563 922401 1062819 1505331 2425573 3188457 3958463 7276719 8384461 11875389 14997557 21830157 25153383 35626167 44992671 65490471 75460149 106878501 134978013 226380447 404934039 1064826547 3194479641 9583438923 28750316769