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218068068 = 22335175167
BaseRepresentation
bin11001111111101…
…11010001100100
3120012100000011010
430333313101210
5421311134233
633345542220
75255355651
oct1477672144
9505300133
10218068068
11102103849
1261044970
133624227a
1420d66c28
1514227b63
hexcff7464

218068068 has 24 divisors (see below), whose sum is σ = 509068672. Its totient is φ = 72654624.

The previous prime is 218068031. The next prime is 218068069. The reversal of 218068068 is 860860812.

It is not an unprimeable number, because it can be changed into a prime (218068069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39621 + ... + 44787.

Almost surely, 2218068068 is an apocalyptic number.

It is an amenable number.

218068068 is an abundant number, since it is smaller than the sum of its proper divisors (291000604).

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

218068068 is a wasteful number, since it uses less digits than its factorization.

218068068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8691 (or 8689 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 218068068 is about 14767.1279536679. The cubic root of 218068068 is about 601.9087988167.

The spelling of 218068068 in words is "two hundred eighteen million, sixty-eight thousand, sixty-eight".

Divisors: 1 2 3 4 6 12 3517 5167 7034 10334 10551 14068 15501 20668 21102 31002 42204 62004 18172339 36344678 54517017 72689356 109034034 218068068