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8680540 = 22511217211
BaseRepresentation
bin100001000111…
…010001011100
3121100000110111
4201013101130
54210234130
6510015404
7133532461
oct41072134
917300414
108680540
114999900
122aa7564
131a4c11b
14121d668
15b6702a
hex84745c

8680540 has 72 divisors (see below), whose sum is σ = 21316176. Its totient is φ = 2956800.

The previous prime is 8680513. The next prime is 8680543. The reversal of 8680540 is 450868.

8680540 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8680543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41035 + ... + 41245.

It is an arithmetic number, because the mean of its divisors is an integer number (296058).

Almost surely, 28680540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8680540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10658088).

8680540 is an abundant number, since it is smaller than the sum of its proper divisors (12635636).

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

8680540 is a wasteful number, since it uses less digits than its factorization.

8680540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 8680540 is about 2946.2756150774. The cubic root of 8680540 is about 205.5175500982.

The spelling of 8680540 in words is "eight million, six hundred eighty thousand, five hundred forty".

Divisors: 1 2 4 5 10 11 17 20 22 34 44 55 68 85 110 121 170 187 211 220 242 340 374 422 484 605 748 844 935 1055 1210 1870 2057 2110 2321 2420 3587 3740 4114 4220 4642 7174 8228 9284 10285 11605 14348 17935 20570 23210 25531 35870 39457 41140 46420 51062 71740 78914 102124 127655 157828 197285 255310 394570 434027 510620 789140 868054 1736108 2170135 4340270 8680540