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20048888868 = 22317797123311
BaseRepresentation
bin10010101011000000…
…011100010000100100
31220202020112002011120
4102223000130100210
5312030003420433
613113233133540
71306554513021
oct225300342044
956666462146
1020048888868
118559090a48
123a763ba2b0
131b76864368
14d829b0548
157c51c67b3
hex4ab01c424

20048888868 has 48 divisors (see below), whose sum is σ = 49595099904. Its totient is φ = 6281904640.

The previous prime is 20048888831. The next prime is 20048888869. The reversal of 20048888868 is 86888884002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20048888869) 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, 100933 + ... + 224243.

It is an arithmetic number, because the mean of its divisors is an integer number (1033231248).

Almost surely, 220048888868 is an apocalyptic number.

It is an amenable number.

20048888868 is an abundant number, since it is smaller than the sum of its proper divisors (29546211036).

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

20048888868 is a wasteful number, since it uses less digits than its factorization.

20048888868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124132 (or 124130 counting only the distinct ones).

The product of its (nonzero) digits is 12582912, while the sum is 60.

The spelling of 20048888868 in words is "twenty billion, forty-eight million, eight hundred eighty-eight thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 204 797 1594 2391 3188 4782 9564 13549 27098 40647 54196 81294 123311 162588 246622 369933 493244 739866 1479732 2096287 4192574 6288861 8385148 12577722 25155444 98278867 196557734 294836601 393115468 589673202 1179346404 1670740739 3341481478 5012222217 6682962956 10024444434 20048888868