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8107149 = 33896947
BaseRepresentation
bin11110111011010010001101
3120020212220210
4132323102031
54033412044
6445433033
7125624001
oct36732215
916225823
108107149
114638026
12286b779
1318ab13b
141110701
15aa21b9
hex7bb48d

8107149 has 8 divisors (see below), whose sum is σ = 10838880. Its totient is φ = 5390096.

The previous prime is 8107139. The next prime is 8107157. The reversal of 8107149 is 9417018.

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

It is a cyclic number.

It is not a de Polignac number, because 8107149 - 24 = 8107133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8107139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2307 + ... + 4640.

It is an arithmetic number, because the mean of its divisors is an integer number (1354860).

Almost surely, 28107149 is an apocalyptic number.

It is an amenable number.

8107149 is a deficient number, since it is larger than the sum of its proper divisors (2731731).

8107149 is a wasteful number, since it uses less digits than its factorization.

8107149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7339.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 8107149 is about 2847.3055684278. The cubic root of 8107149 is about 200.8889513072. Note that the first 3 decimals are identical.

It can be divided in two parts, 8107 and 149, that added together give a triangular number (8256 = T128).

The spelling of 8107149 in words is "eight million, one hundred seven thousand, one hundred forty-nine".

Divisors: 1 3 389 1167 6947 20841 2702383 8107149