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13281494 = 219834211
BaseRepresentation
bin110010101010…
…100011010110
3220222202210012
4302222203112
511400001434
61152400222
7220614362
oct62524326
926882705
1013281494
117551646
124546072
1329a0395
141a9a2a2
1512753ce
hexcaa8d6

13281494 has 16 divisors (see below), whose sum is σ = 21228480. Its totient is φ = 6213960.

The previous prime is 13281493. The next prime is 13281497. The reversal of 13281494 is 49418231.

It is a happy number.

13281494 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

13281494 is a modest number, since divided by 1494 gives 1328 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 13281494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13281493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1049 + ... + 5259.

It is an arithmetic number, because the mean of its divisors is an integer number (1326780).

Almost surely, 213281494 is an apocalyptic number.

13281494 is a deficient number, since it is larger than the sum of its proper divisors (7946986).

13281494 is a wasteful number, since it uses less digits than its factorization.

13281494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4315.

The product of its digits is 6912, while the sum is 32.

The square root of 13281494 is about 3644.3784106484. The cubic root of 13281494 is about 236.8185095367.

The spelling of 13281494 in words is "thirteen million, two hundred eighty-one thousand, four hundred ninety-four".

Divisors: 1 2 19 38 83 166 1577 3154 4211 8422 80009 160018 349513 699026 6640747 13281494