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205168208 = 2472836473
BaseRepresentation
bin11000011101010…
…01111001010000
3112022001121212112
430032221321100
5410010340313
632205244452
75040621020
oct1416517120
9468047775
10205168208
11a58a2a03
1258863728
133367680b
141d369a80
151302a8a8
hexc3a9e50

205168208 has 40 divisors (see below), whose sum is σ = 455976768. Its totient is φ = 87604992.

The previous prime is 205168181. The next prime is 205168217. The reversal of 205168208 is 802861502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28460 + ... + 34932.

Almost surely, 2205168208 is an apocalyptic number.

205168208 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

205168208 is an abundant number, since it is smaller than the sum of its proper divisors (250808560).

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

205168208 is a wasteful number, since it uses less digits than its factorization.

205168208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6771 (or 6765 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 205168208 is about 14323.6939369703. The cubic root of 205168208 is about 589.7980808608.

The spelling of 205168208 in words is "two hundred five million, one hundred sixty-eight thousand, two hundred eight".

Divisors: 1 2 4 7 8 14 16 28 56 112 283 566 1132 1981 2264 3962 4528 6473 7924 12946 15848 25892 31696 45311 51784 90622 103568 181244 362488 724976 1831859 3663718 7327436 12823013 14654872 25646026 29309744 51292052 102584104 205168208