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13284399 = 331831721
BaseRepresentation
bin110010101011…
…010000101111
3220222220202210
4302223100233
511400100044
61152421503
7220626012
oct62532057
926886683
1013284399
117553847
124547893
1329a17bb
141a9b379
1512761b9
hexcab42f

13284399 has 16 divisors (see below), whose sum is σ = 18514944. Its totient is φ = 8462400.

The previous prime is 13284389. The next prime is 13284413. The reversal of 13284399 is 99348231.

It is not a de Polignac number, because 13284399 - 211 = 13282351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13284319) 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 15 ways as a sum of consecutive naturals, for example, 6859 + ... + 8579.

It is an arithmetic number, because the mean of its divisors is an integer number (1157184).

Almost surely, 213284399 is an apocalyptic number.

13284399 is a deficient number, since it is larger than the sum of its proper divisors (5230545).

13284399 is a wasteful number, since it uses less digits than its factorization.

13284399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838.

The product of its digits is 46656, while the sum is 39.

The square root of 13284399 is about 3644.7769479078. The cubic root of 13284399 is about 236.8357743519.

The spelling of 13284399 in words is "thirteen million, two hundred eighty-four thousand, three hundred ninety-nine".

Divisors: 1 3 31 83 93 249 1721 2573 5163 7719 53351 142843 160053 428529 4428133 13284399