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8105140 = 2251273191
BaseRepresentation
bin11110111010110010110100
3120020210011101
4132322302310
54033331030
6445415444
7125615101
oct36726264
916223141
108105140
11463656a
12286a584
1318aa254
14110daa8
15aa17ca
hex7bacb4

8105140 has 24 divisors (see below), whose sum is σ = 17160192. Its totient is φ = 3215520.

The previous prime is 8105129. The next prime is 8105179. The reversal of 8105140 is 415018.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945 + ... + 4135.

It is an arithmetic number, because the mean of its divisors is an integer number (715008).

Almost surely, 28105140 is an apocalyptic number.

It is an amenable number.

8105140 is an abundant number, since it is smaller than the sum of its proper divisors (9055052).

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

8105140 is a wasteful number, since it uses less digits than its factorization.

8105140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327 (or 3325 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 8105140 is about 2846.9527568964. The cubic root of 8105140 is about 200.8723561085.

The spelling of 8105140 in words is "eight million, one hundred five thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 127 254 508 635 1270 2540 3191 6382 12764 15955 31910 63820 405257 810514 1621028 2026285 4052570 8105140