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10000199988 = 22321912575659
BaseRepresentation
bin10010101000000111…
…01111000100110100
3221210221010210110100
421110003233010310
5130440022344423
64332150554100
7502546204002
oct112403570464
927727123410
1010000199988
114271941299
121b31068930
13c34a5a4cc
146ac1b5a72
153d7dec343
hex2540ef134

10000199988 has 72 divisors (see below), whose sum is σ = 25514012160. Its totient is φ = 3302461440.

The previous prime is 10000199987. The next prime is 10000200017. The reversal of 10000199988 is 88999100001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000199983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1764303 + ... + 1769961.

It is an arithmetic number, because the mean of its divisors is an integer number (354361280).

Almost surely, 210000199988 is an apocalyptic number.

10000199988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

10000199988 is an abundant number, since it is smaller than the sum of its proper divisors (15513812172).

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

10000199988 is a wasteful number, since it uses less digits than its factorization.

10000199988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6117 (or 6112 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 45.

Adding to 10000199988 its reverse (88999100001), we get a palindrome (98999299989).

The spelling of 10000199988 in words is "ten billion, one hundred ninety-nine thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 191 257 382 514 573 764 771 1028 1146 1542 1719 2292 2313 3084 3438 4626 5659 6876 9252 11318 16977 22636 33954 49087 50931 67908 98174 101862 147261 196348 203724 294522 441783 589044 883566 1080869 1454363 1767132 2161738 2908726 3242607 4323476 4363089 5817452 6485214 8726178 9727821 12970428 13089267 17452356 19455642 26178534 38911284 52357068 277783333 555566666 833349999 1111133332 1666699998 2500049997 3333399996 5000099994 10000199988