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648130 = 25747197
BaseRepresentation
bin10011110001111000010
31012221001211
42132033002
5131220010
621520334
75336410
oct2361702
91187054
10648130
11402a4a
122730aa
13199012
1412c2b0
15cc08a
hex9e3c2

648130 has 32 divisors (see below), whose sum is σ = 1368576. Its totient is φ = 216384.

The previous prime is 648119. The next prime is 648133. The reversal of 648130 is 31846.

648130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (648133) by changing a digit.

648130 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3192 + ... + 3388.

It is an arithmetic number, because the mean of its divisors is an integer number (42768).

2648130 is an apocalyptic number.

648130 is an abundant number, since it is smaller than the sum of its proper divisors (720446).

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

648130 is a wasteful number, since it uses less digits than its factorization.

648130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 648130 is about 805.0652147497. The cubic root of 648130 is about 86.5407606353.

Adding to 648130 its reverse (31846), we get a palindrome (679976).

The spelling of 648130 in words is "six hundred forty-eight thousand, one hundred thirty".

Divisors: 1 2 5 7 10 14 35 47 70 94 197 235 329 394 470 658 985 1379 1645 1970 2758 3290 6895 9259 13790 18518 46295 64813 92590 129626 324065 648130