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8107245 = 325180161
BaseRepresentation
bin11110111011010011101101
3120020220001100
4132323103231
54033412440
6445433313
7125624166
oct36732355
916226040
108107245
114638103
12286b839
1318ab1b3
14111076d
15aa2230
hex7bb4ed

8107245 has 12 divisors (see below), whose sum is σ = 14052636. Its totient is φ = 4323840.

The previous prime is 8107241. The next prime is 8107261. The reversal of 8107245 is 5427018.

It can be written as a sum of positive squares in 2 ways, for example, as 1153476 + 6953769 = 1074^2 + 2637^2 .

It is not a de Polignac number, because 8107245 - 22 = 8107241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8107241) 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, 90036 + ... + 90125.

It is an arithmetic number, because the mean of its divisors is an integer number (1171053).

Almost surely, 28107245 is an apocalyptic number.

It is an amenable number.

8107245 is a deficient number, since it is larger than the sum of its proper divisors (5945391).

8107245 is a wasteful number, since it uses less digits than its factorization.

8107245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180172 (or 180169 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 8107245 is about 2847.3224264210. The cubic root of 8107245 is about 200.8897442396.

The spelling of 8107245 in words is "eight million, one hundred seven thousand, two hundred forty-five".

Divisors: 1 3 5 9 15 45 180161 540483 900805 1621449 2702415 8107245