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13256130 = 2351972243
BaseRepresentation
bin110010100100…
…010111000010
3220221110222210
4302210113002
511343144010
61152042550
7220450416
oct62442702
926843883
1013256130
117534588
124533456
132991984
141a90d46
15126cb20
hexca45c2

13256130 has 32 divisors (see below), whose sum is σ = 31990464. Its totient is φ = 3515456.

The previous prime is 13256077. The next prime is 13256137. The reversal of 13256130 is 3165231.

It is a junction number, because it is equal to n+sod(n) for n = 13256097 and 13256106.

It is not an unprimeable number, because it can be changed into a prime (13256137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4789 + ... + 7031.

It is an arithmetic number, because the mean of its divisors is an integer number (999702).

Almost surely, 213256130 is an apocalyptic number.

13256130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13256130 is an abundant number, since it is smaller than the sum of its proper divisors (18734334).

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

13256130 is a wasteful number, since it uses less digits than its factorization.

13256130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 13256130 is about 3640.8968675314. The cubic root of 13256130 is about 236.6676607333.

The spelling of 13256130 in words is "thirteen million, two hundred fifty-six thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 197 394 591 985 1182 1970 2243 2955 4486 5910 6729 11215 13458 22430 33645 67290 441871 883742 1325613 2209355 2651226 4418710 6628065 13256130