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205716468 = 22317143039
BaseRepresentation
bin11000100001011…
…11101111110100
3112100002110221110
430100233233310
5410130411333
632225115020
75045363316
oct1420575764
9470073843
10205716468
11a6137911
1258a88a70
1333809229
141d46d7b6
15130d8063
hexc42fbf4

205716468 has 12 divisors (see below), whose sum is σ = 480005120. Its totient is φ = 68572152.

The previous prime is 205716457. The next prime is 205716481. The reversal of 205716468 is 864617502.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8571508 + ... + 8571531.

Almost surely, 2205716468 is an apocalyptic number.

It is an amenable number.

205716468 is an abundant number, since it is smaller than the sum of its proper divisors (274288652).

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

205716468 is a wasteful number, since it uses less digits than its factorization.

205716468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17143046 (or 17143044 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 205716468 is about 14342.8193881119. The cubic root of 205716468 is about 590.3229755166.

The spelling of 205716468 in words is "two hundred five million, seven hundred sixteen thousand, four hundred sixty-eight".

Divisors: 1 2 3 4 6 12 17143039 34286078 51429117 68572156 102858234 205716468