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8715140 = 225728893
BaseRepresentation
bin100001001111…
…101110000100
3121101202220222
4201033232010
54212341030
6510443512
7134035400
oct41175604
917352828
108715140
114a128a5
122b03598
131a61ab5
14122c100
15b723e5
hex84fb84

8715140 has 36 divisors (see below), whose sum is σ = 21292236. Its totient is φ = 2987712.

The previous prime is 8715107. The next prime is 8715143. The reversal of 8715140 is 415178.

8715140 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2079364 + 6635776 = 1442^2 + 2576^2 .

It is not an unprimeable number, because it can be changed into a prime (8715143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3467 + ... + 5426.

It is an arithmetic number, because the mean of its divisors is an integer number (591451).

Almost surely, 28715140 is an apocalyptic number.

It is an amenable number.

8715140 is an abundant number, since it is smaller than the sum of its proper divisors (12577096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8715140 is a wasteful number, since it uses less digits than its factorization.

8715140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8916 (or 8907 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 8715140 is about 2952.1415955201. The cubic root of 8715140 is about 205.7902474284.

The spelling of 8715140 in words is "eight million, seven hundred fifteen thousand, one hundred forty".

Divisors: 1 2 4 5 7 10 14 20 28 35 49 70 98 140 196 245 490 980 8893 17786 35572 44465 62251 88930 124502 177860 249004 311255 435757 622510 871514 1245020 1743028 2178785 4357570 8715140