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8130474 = 2321123733
BaseRepresentation
bin11111000000111110101010
3120022001220200
4133000332222
54040133344
6450133030
7126052002
oct37007652
916261820
108130474
114653600
122881176
1318b8941
141119002
15aa9069
hex7c0faa

8130474 has 36 divisors (see below), whose sum is σ = 19368258. Its totient is φ = 2463120.

The previous prime is 8130449. The next prime is 8130509. The reversal of 8130474 is 4740318.

It can be written as a sum of positive squares in only one way, i.e., 6796449 + 1334025 = 2607^2 + 1155^2 .

It is a super-2 number, since 2×81304742 = 132209214929352, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 312 + ... + 4044.

Almost surely, 28130474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8130474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9684129).

8130474 is an abundant number, since it is smaller than the sum of its proper divisors (11237784).

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

8130474 is a wasteful number, since it uses less digits than its factorization.

8130474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3763 (or 3749 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 8130474 is about 2851.3986041941. The cubic root of 8130474 is about 201.0814253897.

The spelling of 8130474 in words is "eight million, one hundred thirty thousand, four hundred seventy-four".

Divisors: 1 2 3 6 9 11 18 22 33 66 99 121 198 242 363 726 1089 2178 3733 7466 11199 22398 33597 41063 67194 82126 123189 246378 369567 451693 739134 903386 1355079 2710158 4065237 8130474