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12547130 = 256192027
BaseRepresentation
bin101111110111…
…010000111010
3212121110102112
4233313100322
511203002010
61124532322
7211435361
oct57672072
925543375
1012547130
11709a932
1242510a2
1327a404b
1419487d8
15117ca05
hexbf743a

12547130 has 16 divisors (see below), whose sum is σ = 22632480. Its totient is φ = 5008272.

The previous prime is 12547109. The next prime is 12547133. The reversal of 12547130 is 3174521.

It is a junction number, because it is equal to n+sod(n) for n = 12547096 and 12547105.

It is not an unprimeable number, because it can be changed into a prime (12547133) 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, 5177 + ... + 7203.

It is an arithmetic number, because the mean of its divisors is an integer number (1414530).

Almost surely, 212547130 is an apocalyptic number.

12547130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12547130 is a deficient number, since it is larger than the sum of its proper divisors (10085350).

12547130 is a wasteful number, since it uses less digits than its factorization.

12547130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 12547130 is about 3542.1928236616. The cubic root of 12547130 is about 232.3707533087.

The spelling of 12547130 in words is "twelve million, five hundred forty-seven thousand, one hundred thirty".

Divisors: 1 2 5 10 619 1238 2027 3095 4054 6190 10135 20270 1254713 2509426 6273565 12547130