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8130258 = 232451681
BaseRepresentation
bin11111000000111011010010
3120022001121200
4133000323102
54040132013
6450132030
7126051243
oct37007322
916261550
108130258
114653424
122881016
1318b8806
141118cca
15aa8e73
hex7c0ed2

8130258 has 12 divisors (see below), whose sum is σ = 17615598. Its totient is φ = 2710080.

The previous prime is 8130251. The next prime is 8130299. The reversal of 8130258 is 8520318.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7469289 + 660969 = 2733^2 + 813^2 .

It is a super-2 number, since 2×81302582 = 132202190293128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8130251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 225823 + ... + 225858.

Almost surely, 28130258 is an apocalyptic number.

8130258 is an abundant number, since it is smaller than the sum of its proper divisors (9485340).

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

8130258 is a wasteful number, since it uses less digits than its factorization.

8130258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451689 (or 451686 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 8130258 is about 2851.3607277930. The cubic root of 8130258 is about 201.0796446829.

The spelling of 8130258 in words is "eight million, one hundred thirty thousand, two hundred fifty-eight".

Divisors: 1 2 3 6 9 18 451681 903362 1355043 2710086 4065129 8130258