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206906914 = 2103453457
BaseRepresentation
bin11000101010100…
…10011000100010
3112102022221221001
430111102120202
5410432010124
632310422214
75061452104
oct1425223042
9472287831
10206906914
11a6880255
125936196a
1333b35036
141d69d574
1513270b44
hexc552622

206906914 has 4 divisors (see below), whose sum is σ = 310360374. Its totient is φ = 103453456.

The previous prime is 206906911. The next prime is 206906929. The reversal of 206906914 is 419609602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 419609602 = 2209804801.

It can be written as a sum of positive squares in only one way, i.e., 206066025 + 840889 = 14355^2 + 917^2 .

It is a super-2 number, since 2×2069069142 = 85620942122006792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (206906911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51726727 + ... + 51726730.

Almost surely, 2206906914 is an apocalyptic number.

206906914 is a deficient number, since it is larger than the sum of its proper divisors (103453460).

206906914 is a wasteful number, since it uses less digits than its factorization.

206906914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103453459.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 206906914 is about 14384.2592440487. The cubic root of 206906914 is about 591.4594854144.

The spelling of 206906914 in words is "two hundred six million, nine hundred six thousand, nine hundred fourteen".

Divisors: 1 2 103453457 206906914