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206992 = 2417761
BaseRepresentation
bin110010100010010000
3101111221101
4302202100
523110432
64234144
71521322
oct624220
9344841
10206992
11131575
129b954
13732a6
1455612
15414e7
hex32890

206992 has 20 divisors (see below), whose sum is σ = 425196. Its totient is φ = 97280.

The previous prime is 206953. The next prime is 206993. The reversal of 206992 is 299602.

It can be written as a sum of positive squares in 2 ways, for example, as 59536 + 147456 = 244^2 + 384^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 206992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109 + ... + 652.

2206992 is an apocalyptic number.

It is an amenable number.

206992 is an abundant number, since it is smaller than the sum of its proper divisors (218204).

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

206992 is a wasteful number, since it uses less digits than its factorization.

206992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 206992 is about 454.9637348185. The cubic root of 206992 is about 59.1540549284.

The spelling of 206992 in words is "two hundred six thousand, nine hundred ninety-two".

Divisors: 1 2 4 8 16 17 34 68 136 272 761 1522 3044 6088 12176 12937 25874 51748 103496 206992