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12795381 = 3343103107
BaseRepresentation
bin110000110011…
…110111110101
3220002001222000
4300303313311
511233423011
61134125513
7213521214
oct60636765
926061860
1012795381
11724a3a5
124350899
132860041
1419b107b
1511cb356
hexc33df5

12795381 has 32 divisors (see below), whose sum is σ = 19768320. Its totient is φ = 8173872.

The previous prime is 12795361. The next prime is 12795427. The reversal of 12795381 is 18359721.

12795381 is a `hidden beast` number, since 1 + 279 + 5 + 381 = 666.

It is not a de Polignac number, because 12795381 - 213 = 12787189 is a prime.

It is a super-2 number, since 2×127953812 = 327443549870322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12795311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119530 + ... + 119636.

It is an arithmetic number, because the mean of its divisors is an integer number (617760).

Almost surely, 212795381 is an apocalyptic number.

It is an amenable number.

12795381 is a deficient number, since it is larger than the sum of its proper divisors (6972939).

12795381 is a wasteful number, since it uses less digits than its factorization.

12795381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 256 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 12795381 is about 3577.0631808790. The cubic root of 12795381 is about 233.8932780928.

The spelling of 12795381 in words is "twelve million, seven hundred ninety-five thousand, three hundred eighty-one".

Divisors: 1 3 9 27 43 103 107 129 309 321 387 927 963 1161 2781 2889 4429 4601 11021 13287 13803 33063 39861 41409 99189 119583 124227 297567 473903 1421709 4265127 12795381