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13284489 = 34428163
BaseRepresentation
bin110010101011…
…010010001001
3220222220220010
4302223102021
511400100424
61152422133
7220626201
oct62532211
926886803
1013284489
117553919
124547949
1329a185a
141a9b401
151276229
hexcab489

13284489 has 4 divisors (see below), whose sum is σ = 17712656. Its totient is φ = 8856324.

The previous prime is 13284473. The next prime is 13284521. The reversal of 13284489 is 98448231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13284489 - 24 = 13284473 is a prime.

It is a super-2 number, since 2×132844892 = 352955295982242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13284419) 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 3 ways as a sum of consecutive naturals, for example, 2214079 + ... + 2214084.

It is an arithmetic number, because the mean of its divisors is an integer number (4428164).

Almost surely, 213284489 is an apocalyptic number.

It is an amenable number.

13284489 is a deficient number, since it is larger than the sum of its proper divisors (4428167).

13284489 is an equidigital number, since it uses as much as digits as its factorization.

13284489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428166.

The product of its digits is 55296, while the sum is 39.

The square root of 13284489 is about 3644.7892943214. The cubic root of 13284489 is about 236.8363091941.

The spelling of 13284489 in words is "thirteen million, two hundred eighty-four thousand, four hundred eighty-nine".

Divisors: 1 3 4428163 13284489