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206225007 = 3973671931
BaseRepresentation
bin11000100101010…
…11111001101111
3112101001022112020
430102223321233
5410243200012
632244041223
75052612042
oct1422537157
9471038466
10206225007
11a645499a
1259093213
1333956841
141d562c59
1513188a8c
hexc4abe6f

206225007 has 16 divisors (see below), whose sum is σ = 278702592. Its totient is φ = 135624960.

The previous prime is 206224999. The next prime is 206225009. The reversal of 206225007 is 700522602.

It is not a de Polignac number, because 206225007 - 23 = 206224999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206225009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105832 + ... + 107762.

It is an arithmetic number, because the mean of its divisors is an integer number (17418912).

Almost surely, 2206225007 is an apocalyptic number.

206225007 is a deficient number, since it is larger than the sum of its proper divisors (72477585).

206225007 is a wasteful number, since it uses less digits than its factorization.

206225007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 206225007 is about 14360.5364454118. The cubic root of 206225007 is about 590.8090089185.

Adding to 206225007 its reverse (700522602), we get a palindrome (906747609).

The spelling of 206225007 in words is "two hundred six million, two hundred twenty-five thousand, seven".

Divisors: 1 3 97 291 367 1101 1931 5793 35599 106797 187307 561921 708677 2126031 68741669 206225007