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99888866 = 2711648629
BaseRepresentation
bin1011111010000…
…10111011100010
320221221212202122
411331002323202
5201032420431
613524544242
72322020120
oct575027342
9227855678
1099888866
1151425a90
1229552082
131790504c
14d3a2910
158b81a7b
hex5f42ee2

99888866 has 16 divisors (see below), whose sum is σ = 186805440. Its totient is φ = 38917680.

The previous prime is 99888857. The next prime is 99888869. The reversal of 99888866 is 66888899.

It is a happy number.

99888866 is a strobogrammatic number because it is the same when read upside-down.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 99888799 and 99888808.

It is not an unprimeable number, because it can be changed into a prime (99888869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324161 + ... + 324468.

It is an arithmetic number, because the mean of its divisors is an integer number (11675340).

Almost surely, 299888866 is an apocalyptic number.

99888866 is a deficient number, since it is larger than the sum of its proper divisors (86916574).

99888866 is a wasteful number, since it uses less digits than its factorization.

99888866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648649.

The product of its digits is 11943936, while the sum is 62.

The square root of 99888866 is about 9994.4417552958. The cubic root of 99888866 is about 463.9868735139.

The spelling of 99888866 in words is "ninety-nine million, eight hundred eighty-eight thousand, eight hundred sixty-six".

Divisors: 1 2 7 11 14 22 77 154 648629 1297258 4540403 7134919 9080806 14269838 49944433 99888866