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13088320 = 26575843
BaseRepresentation
bin110001111011…
…011001000000
3220121221210121
4301323121000
511322311240
61144310024
7216151240
oct61733100
926557717
1013088320
11742a4a3
124472314
13293348b
141a49b20
15123804a
hexc7b640

13088320 has 56 divisors (see below), whose sum is σ = 35625024. Its totient is φ = 4486656.

The previous prime is 13088281. The next prime is 13088323. The reversal of 13088320 is 2388031.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (13088323) 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, 682 + ... + 5161.

Almost surely, 213088320 is an apocalyptic number.

13088320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13088320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17812512).

13088320 is an abundant number, since it is smaller than the sum of its proper divisors (22536704).

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

13088320 is an equidigital number, since it uses as much as digits as its factorization.

13088320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5867 (or 5857 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 13088320 is about 3617.7783237783. The cubic root of 13088320 is about 235.6647542958.

The spelling of 13088320 in words is "thirteen million, eighty-eight thousand, three hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 140 160 224 280 320 448 560 1120 2240 5843 11686 23372 29215 40901 46744 58430 81802 93488 116860 163604 186976 204505 233720 327208 373952 409010 467440 654416 818020 934880 1308832 1636040 1869760 2617664 3272080 6544160 13088320