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12971130 = 2353371283
BaseRepresentation
bin110001011110…
…110001111010
3220102000001020
4301132301322
511310034010
61142003310
7215152464
oct61366172
926360036
1012971130
11735a447
124416536
1328c2033
141a19134
151213470
hexc5ec7a

12971130 has 32 divisors (see below), whose sum is σ = 31247424. Its totient is φ = 3446016.

The previous prime is 12971117. The next prime is 12971137. The reversal of 12971130 is 3117921.

It is a self number, because there is not a number n which added to its sum of digits gives 12971130.

It is not an unprimeable number, because it can be changed into a prime (12971137) 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, 9469 + ... + 10751.

It is an arithmetic number, because the mean of its divisors is an integer number (976482).

Almost surely, 212971130 is an apocalyptic number.

12971130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12971130 is an abundant number, since it is smaller than the sum of its proper divisors (18276294).

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

12971130 is a wasteful number, since it uses less digits than its factorization.

12971130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 12971130 is about 3601.5455015868. The cubic root of 12971130 is about 234.9592807070.

The spelling of 12971130 in words is "twelve million, nine hundred seventy-one thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 337 674 1011 1283 1685 2022 2566 3370 3849 5055 6415 7698 10110 12830 19245 38490 432371 864742 1297113 2161855 2594226 4323710 6485565 12971130