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107212285 = 5171261321
BaseRepresentation
bin1100110001111…
…10110111111101
321110201221121101
412120332313331
5204421243120
614345533101
72441201155
oct630766775
9243657541
10107212285
11555781a4
122baa4191
131929a52b
141034b765
15962b90a
hex663edfd

107212285 has 8 divisors (see below), whose sum is σ = 136222776. Its totient is φ = 80724480.

The previous prime is 107212283. The next prime is 107212289. The reversal of 107212285 is 582212701.

It can be written as a sum of positive squares in 4 ways, for example, as 21427641 + 85784644 = 4629^2 + 9262^2 .

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

It is not a de Polignac number, because 107212285 - 21 = 107212283 is a prime.

It is a super-2 number, since 2×1072122852 = 22988948109842450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107212283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 630576 + ... + 630745.

It is an arithmetic number, because the mean of its divisors is an integer number (17027847).

Almost surely, 2107212285 is an apocalyptic number.

It is an amenable number.

107212285 is a deficient number, since it is larger than the sum of its proper divisors (29010491).

107212285 is a wasteful number, since it uses less digits than its factorization.

107212285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261343.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 107212285 is about 10354.3365311352. The cubic root of 107212285 is about 475.0596933290.

Adding to 107212285 its reverse (582212701), we get a palindrome (689424986).

The spelling of 107212285 in words is "one hundred seven million, two hundred twelve thousand, two hundred eighty-five".

Divisors: 1 5 17 85 1261321 6306605 21442457 107212285