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206807045 = 5311334239
BaseRepresentation
bin11000101001110…
…10000000000101
3112102010212221012
430110322000011
5410420311140
632304332005
75060554664
oct1424720005
9472125835
10206807045
11a6812215
1259314005
1333acb743
141d674ddb
1513251265
hexc53a005

206807045 has 8 divisors (see below), whose sum is σ = 256174080. Its totient is φ = 160108560.

The previous prime is 206807009. The next prime is 206807047. The reversal of 206807045 is 540708602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206807045 - 26 = 206806981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206807047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 666965 + ... + 667274.

It is an arithmetic number, because the mean of its divisors is an integer number (32021760).

Almost surely, 2206807045 is an apocalyptic number.

It is an amenable number.

206807045 is a deficient number, since it is larger than the sum of its proper divisors (49367035).

206807045 is a wasteful number, since it uses less digits than its factorization.

206807045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334275.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 206807045 is about 14380.7873567479. The cubic root of 206807045 is about 591.3643090017.

The spelling of 206807045 in words is "two hundred six million, eight hundred seven thousand, forty-five".

Divisors: 1 5 31 155 1334239 6671195 41361409 206807045