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12515080 = 235595303
BaseRepresentation
bin101111101111…
…011100001000
3212112211110111
4233233130020
511200440310
61124124104
7211243054
oct57573410
925484414
1012515080
117078846
124236634
132792596
14193ac64
15117328a
hexbef708

12515080 has 32 divisors (see below), whose sum is σ = 28641600. Its totient is φ = 4920256.

The previous prime is 12515071. The next prime is 12515081. The reversal of 12515080 is 8051521.

It is not an unprimeable number, because it can be changed into a prime (12515081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292 + ... + 5011.

It is an arithmetic number, because the mean of its divisors is an integer number (895050).

Almost surely, 212515080 is an apocalyptic number.

12515080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12515080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14320800).

12515080 is an abundant number, since it is smaller than the sum of its proper divisors (16126520).

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

12515080 is a wasteful number, since it uses less digits than its factorization.

12515080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5373 (or 5369 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 12515080 is about 3537.6658971701. The cubic root of 12515080 is about 232.1727310554.

The spelling of 12515080 in words is "twelve million, five hundred fifteen thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 59 118 236 295 472 590 1180 2360 5303 10606 21212 26515 42424 53030 106060 212120 312877 625754 1251508 1564385 2503016 3128770 6257540 12515080