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108828261 = 3219362653
BaseRepresentation
bin1100111110010…
…01011001100101
321120210001022100
412133021121211
5210330001021
614444322313
72461011363
oct637113145
9246701270
10108828261
1156481313
1230543399
1319714c29
141064c633
15984a626
hex67c9665

108828261 has 12 divisors (see below), whose sum is σ = 158013388. Its totient is φ = 72175104.

The previous prime is 108828253. The next prime is 108828263. The reversal of 108828261 is 162828801.

It can be written as a sum of positive squares in 2 ways, for example, as 27720225 + 81108036 = 5265^2 + 9006^2 .

It is not a de Polignac number, because 108828261 - 23 = 108828253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108828263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29590 + ... + 33063.

Almost surely, 2108828261 is an apocalyptic number.

It is an amenable number.

108828261 is a deficient number, since it is larger than the sum of its proper divisors (49185127).

108828261 is a wasteful number, since it uses less digits than its factorization.

108828261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62852 (or 62849 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 108828261 is about 10432.0784602111. The cubic root of 108828261 is about 477.4346077863.

The spelling of 108828261 in words is "one hundred eight million, eight hundred twenty-eight thousand, two hundred sixty-one".

Divisors: 1 3 9 193 579 1737 62653 187959 563877 12092029 36276087 108828261