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7129434 = 231327989
BaseRepresentation
bin11011001100100101011010
3111102012202010
4123030211122
53311120214
6412450350
7114412344
oct33144532
914365663
107129434
11402a4a4
1224799b6
131628100
14d38294
1595c659
hex6cc95a

7129434 has 48 divisors (see below), whose sum is σ = 15811200. Its totient is φ = 2141568.

The previous prime is 7129417. The next prime is 7129439. The reversal of 7129434 is 4349217.

It is a happy number.

It is a d-powerful number, because it can be written as 77 + 1 + 27 + 96 + 410 + 312 + 411 .

It is not an unprimeable number, because it can be changed into a prime (7129439) 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, 80062 + ... + 80150.

It is an arithmetic number, because the mean of its divisors is an integer number (329400).

Almost surely, 27129434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7129434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7905600).

7129434 is an abundant number, since it is smaller than the sum of its proper divisors (8681766).

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

7129434 is a wasteful number, since it uses less digits than its factorization.

7129434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 186 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 7129434 is about 2670.0999981274. The cubic root of 7129434 is about 192.4649646702.

The spelling of 7129434 in words is "seven million, one hundred twenty-nine thousand, four hundred thirty-four".

Divisors: 1 2 3 6 13 26 39 78 79 89 158 169 178 237 267 338 474 507 534 1014 1027 1157 2054 2314 3081 3471 6162 6942 7031 13351 14062 15041 21093 26702 30082 40053 42186 45123 80106 90246 91403 182806 274209 548418 1188239 2376478 3564717 7129434