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108806245 = 521761249
BaseRepresentation
bin1100111110001…
…00000001100101
321120201221002221
412133010001211
5210323244440
614444032341
72460560242
oct637040145
9246657087
10108806245
1156466819
12305326b1
1319707bc2
14106445c9
159843d4a
hex67c4065

108806245 has 4 divisors (see below), whose sum is σ = 130567500. Its totient is φ = 87044992.

The previous prime is 108806219. The next prime is 108806263. The reversal of 108806245 is 542608801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38950081 + 69856164 = 6241^2 + 8358^2 .

It is a cyclic number.

It is not a de Polignac number, because 108806245 - 223 = 100417637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 108806245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10880620 + ... + 10880629.

It is an arithmetic number, because the mean of its divisors is an integer number (32641875).

Almost surely, 2108806245 is an apocalyptic number.

It is an amenable number.

108806245 is a deficient number, since it is larger than the sum of its proper divisors (21761255).

108806245 is an equidigital number, since it uses as much as digits as its factorization.

108806245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21761254.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 108806245 is about 10431.0232000509. The cubic root of 108806245 is about 477.4024105454.

The spelling of 108806245 in words is "one hundred eight million, eight hundred six thousand, two hundred forty-five".

Divisors: 1 5 21761249 108806245