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20068068400 = 245253946607
BaseRepresentation
bin10010101100001001…
…100110110000110000
31220210120121111112121
4102230021212300300
5312044411142100
613115200204024
71310206524022
oct225411466060
956716544477
1020068068400
1185689a08a6
123a80909614
131b7a81b1b3
14d85364012
157c6c1451a
hex4ac266c30

20068068400 has 60 divisors (see below), whose sum is σ = 49123275552. Its totient is φ = 7875761920.

The previous prime is 20068068379. The next prime is 20068068401. The reversal of 20068068400 is 486086002.

It is not an unprimeable number, because it can be changed into a prime (20068068401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 452104 + ... + 494503.

Almost surely, 220068068400 is an apocalyptic number.

20068068400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20068068400 is an abundant number, since it is smaller than the sum of its proper divisors (29055207152).

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

20068068400 is a wasteful number, since it uses less digits than its factorization.

20068068400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946678 (or 946667 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 20068068400 in words is "twenty billion, sixty-eight million, sixty-eight thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 53 80 100 106 200 212 265 400 424 530 848 1060 1325 2120 2650 4240 5300 10600 21200 946607 1893214 3786428 4733035 7572856 9466070 15145712 18932140 23665175 37864280 47330350 50170171 75728560 94660700 100340342 189321400 200680684 250850855 378642800 401361368 501701710 802722736 1003403420 1254254275 2006806840 2508508550 4013613680 5017017100 10034034200 20068068400