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99999808 = 265971373
BaseRepresentation
bin1011111010111…
…10000001000000
320222011111221121
411331132001000
5201044443213
613531202024
72322661426
oct575360100
9228144847
1099999808
11514a1377
12295a6314
13179436ac
14d3d1116
158ba488d
hex5f5e040

99999808 has 56 divisors (see below), whose sum is σ = 205191360. Its totient is φ = 48330240.

The previous prime is 99999787. The next prime is 99999821. The reversal of 99999808 is 80899999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267910 + ... + 268282.

Almost surely, 299999808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99999808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102595680).

99999808 is an abundant number, since it is smaller than the sum of its proper divisors (105191552).

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

99999808 is a wasteful number, since it uses less digits than its factorization.

99999808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 61.

The square root of 99999808 is about 9999.9903999954. The cubic root of 99999808 is about 464.1585862994.

The spelling of 99999808 in words is "ninety-nine million, nine hundred ninety-nine thousand, eight hundred eight".

Divisors: 1 2 4 8 16 32 59 64 71 118 142 236 284 373 472 568 746 944 1136 1492 1888 2272 2984 3776 4189 4544 5968 8378 11936 16756 22007 23872 26483 33512 44014 52966 67024 88028 105932 134048 176056 211864 268096 352112 423728 704224 847456 1408448 1562497 1694912 3124994 6249988 12499976 24999952 49999904 99999808