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13294281 = 37111319233
BaseRepresentation
bin110010101101…
…101011001001
3221000102022210
4302231223021
511400404111
61152535333
7220666560
oct62555311
927012283
1013294281
117560210
124551549
1329a6150
141aa0bd7
1512790a6
hexcadac9

13294281 has 64 divisors (see below), whose sum is σ = 25159680. Its totient is φ = 6013440.

The previous prime is 13294271. The next prime is 13294301. The reversal of 13294281 is 18249231.

It is not a de Polignac number, because 13294281 - 210 = 13293257 is a prime.

It is a super-2 number, since 2×132942812 = 353475814613922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13294231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56941 + ... + 57173.

It is an arithmetic number, because the mean of its divisors is an integer number (393120).

Almost surely, 213294281 is an apocalyptic number.

13294281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13294281 is a deficient number, since it is larger than the sum of its proper divisors (11865399).

13294281 is a wasteful number, since it uses less digits than its factorization.

13294281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286.

The product of its digits is 3456, while the sum is 30.

The square root of 13294281 is about 3646.1323344059. The cubic root of 13294281 is about 236.8944856024.

The spelling of 13294281 in words is "thirteen million, two hundred ninety-four thousand, two hundred eighty-one".

Divisors: 1 3 7 11 13 19 21 33 39 57 77 91 133 143 209 231 233 247 273 399 429 627 699 741 1001 1463 1631 1729 2563 2717 3003 3029 4389 4427 4893 5187 7689 8151 9087 13281 17941 19019 21203 30989 33319 48697 53823 57057 57551 63609 92967 99957 146091 172653 233233 340879 402857 633061 699699 1022637 1208571 1899183 4431427 13294281