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12815260 = 2251036221
BaseRepresentation
bin110000111000…
…101110011100
3220010002020021
4300320232130
511240042020
61134401524
7213633163
oct60705634
926102207
1012815260
117263327
1243602a4
1328690c3
1419b83da
1511d21aa
hexc38b9c

12815260 has 24 divisors (see below), whose sum is σ = 27177696. Its totient is φ = 5075520.

The previous prime is 12815251. The next prime is 12815261. The reversal of 12815260 is 6251821.

12815260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12815261) 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, 1051 + ... + 5170.

It is an arithmetic number, because the mean of its divisors is an integer number (1132404).

Almost surely, 212815260 is an apocalyptic number.

12815260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12815260 is an abundant number, since it is smaller than the sum of its proper divisors (14362436).

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

12815260 is a wasteful number, since it uses less digits than its factorization.

12815260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6333 (or 6331 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 12815260 is about 3579.8407785822. The cubic root of 12815260 is about 234.0143415371.

The spelling of 12815260 in words is "twelve million, eight hundred fifteen thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 103 206 412 515 1030 2060 6221 12442 24884 31105 62210 124420 640763 1281526 2563052 3203815 6407630 12815260