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13280488 = 2313277461
BaseRepresentation
bin110010101010…
…010011101000
3220222201101221
4302222103220
511344433423
61152351424
7220611424
oct62522350
926881357
1013280488
117550911
124545574
13299caa0
141a99b84
151274e5d
hexcaa4e8

13280488 has 32 divisors (see below), whose sum is σ = 26971560. Its totient is φ = 6094080.

The previous prime is 13280483. The next prime is 13280489. The reversal of 13280488 is 88408231.

It can be written as a sum of positive squares in 4 ways, for example, as 5673924 + 7606564 = 2382^2 + 2758^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13280483) 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 7 ways as a sum of consecutive naturals, for example, 28578 + ... + 29038.

Almost surely, 213280488 is an apocalyptic number.

It is an amenable number.

13280488 is an abundant number, since it is smaller than the sum of its proper divisors (13691072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13280488 is a wasteful number, since it uses less digits than its factorization.

13280488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757 (or 753 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 13280488 is about 3644.2403872412. The cubic root of 13280488 is about 236.8125301533.

The spelling of 13280488 in words is "thirteen million, two hundred eighty thousand, four hundred eighty-eight".

Divisors: 1 2 4 8 13 26 52 104 277 461 554 922 1108 1844 2216 3601 3688 5993 7202 11986 14404 23972 28808 47944 127697 255394 510788 1021576 1660061 3320122 6640244 13280488