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100680018 = 23171576287
BaseRepresentation
bin1100000000001…
…00000101010010
321000110002000120
412000010011102
5201233230033
613553531110
72331523515
oct600040522
9230402016
10100680018
115191642a
1229873a96
1317b2119a
14d52ad7c
158c8b1b3
hex6004152

100680018 has 32 divisors (see below), whose sum is σ = 214596864. Its totient is φ = 31379712.

The previous prime is 100680017. The next prime is 100680037. The reversal of 100680018 is 810086001.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 100680018.

It is not an unprimeable number, because it can be changed into a prime (100680011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12871 + ... + 19157.

It is an arithmetic number, because the mean of its divisors is an integer number (6706152).

Almost surely, 2100680018 is an apocalyptic number.

100680018 is an abundant number, since it is smaller than the sum of its proper divisors (113916846).

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

100680018 is a wasteful number, since it uses less digits than its factorization.

100680018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6466.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 100680018 is about 10033.9432926442. The cubic root of 100680018 is about 465.2086287774.

The spelling of 100680018 in words is "one hundred million, six hundred eighty thousand, eighteen".

Divisors: 1 2 3 6 17 34 51 102 157 314 471 942 2669 5338 6287 8007 12574 16014 18861 37722 106879 213758 320637 641274 987059 1974118 2961177 5922354 16780003 33560006 50340009 100680018