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12805119 = 3213110861
BaseRepresentation
bin110000110110…
…001111111111
3220002120022200
4300312033333
511234230434
61134242543
7213561465
oct60661777
926076280
1012805119
117256748
124356453
1328645c2
1419b4835
1511ce199
hexc363ff

12805119 has 12 divisors (see below), whose sum is σ = 18639192. Its totient is φ = 8470800.

The previous prime is 12805087. The next prime is 12805127. The reversal of 12805119 is 91150821.

It is not a de Polignac number, because 12805119 - 25 = 12805087 is a prime.

It is a super-2 number, since 2×128051192 = 327942145208322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12805092 and 12805101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12805129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4252 + ... + 6609.

It is an arithmetic number, because the mean of its divisors is an integer number (1553266).

Almost surely, 212805119 is an apocalyptic number.

12805119 is a deficient number, since it is larger than the sum of its proper divisors (5834073).

12805119 is a wasteful number, since it uses less digits than its factorization.

12805119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10998 (or 10995 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 12805119 is about 3578.4240944863. The cubic root of 12805119 is about 233.9525983318.

The spelling of 12805119 in words is "twelve million, eight hundred five thousand, one hundred nineteen".

Divisors: 1 3 9 131 393 1179 10861 32583 97749 1422791 4268373 12805119