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30802169268 = 22331321938867
BaseRepresentation
bin11100101011111100…
…111100110110110100
32221111122201022202000
4130223330330312310
51001040323404033
622052245215300
72140210055523
oct345374746664
987448638660
1030802169268
1112077026742
125b77701530
132b9b627480
1416c2bba4ba
15c0427da13
hex72bf3cdb4

30802169268 has 48 divisors (see below), whose sum is σ = 86000362560. Its totient is φ = 9477590112.

The previous prime is 30802169263. The next prime is 30802169309. The reversal of 30802169268 is 86296120803.

30802169268 is a `hidden beast` number, since 308 + 0 + 21 + 69 + 268 = 666.

It is a super-2 number, since 2×308021692682 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30802169263) 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, 10968030 + ... + 10970837.

It is an arithmetic number, because the mean of its divisors is an integer number (1791674220).

Almost surely, 230802169268 is an apocalyptic number.

It is an amenable number.

30802169268 is an abundant number, since it is smaller than the sum of its proper divisors (55198193292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30802169268 is a wasteful number, since it uses less digits than its factorization.

30802169268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21938893 (or 21938885 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 30802169268 in words is "thirty billion, eight hundred two million, one hundred sixty-nine thousand, two hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 13 18 26 27 36 39 52 54 78 108 117 156 234 351 468 702 1404 21938867 43877734 65816601 87755468 131633202 197449803 263266404 285205271 394899606 570410542 592349409 789799212 855615813 1140821084 1184698818 1711231626 2369397636 2566847439 3422463252 5133694878 7700542317 10267389756 15401084634 30802169268