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12913369 = 719151643
BaseRepresentation
bin110001010000…
…101011011001
3220022001210221
4301100223121
511301211434
61140440041
7214522210
oct61205331
926261727
1012913369
117320007
1243a9021
1328a1961
141a02077
1512012b4
hexc50ad9

12913369 has 16 divisors (see below), whose sum is σ = 15662080. Its totient is φ = 10400400.

The previous prime is 12913363. The next prime is 12913399. The reversal of 12913369 is 96331921.

It is a cyclic number.

It is not a de Polignac number, because 12913369 - 25 = 12913337 is a prime.

It is a super-2 number, since 2×129133692 = 333510197860322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12913363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19762 + ... + 20404.

It is an arithmetic number, because the mean of its divisors is an integer number (978880).

Almost surely, 212913369 is an apocalyptic number.

12913369 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12913369 is a deficient number, since it is larger than the sum of its proper divisors (2748711).

12913369 is a wasteful number, since it uses less digits than its factorization.

12913369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820.

The product of its digits is 8748, while the sum is 34.

The square root of 12913369 is about 3593.5176359662. The cubic root of 12913369 is about 234.6100004773.

The spelling of 12913369 in words is "twelve million, nine hundred thirteen thousand, three hundred sixty-nine".

Divisors: 1 7 19 133 151 643 1057 2869 4501 12217 20083 85519 97093 679651 1844767 12913369