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13480218 = 2321744053
BaseRepresentation
bin110011011011…
…000100011010
3221100212101100
4303123010122
511422331333
61200532230
7222402633
oct63330432
927325340
1013480218
117677984
124621076
132a3c97b
141b0c88a
1512b4213
hexcdb11a

13480218 has 24 divisors (see below), whose sum is σ = 30925908. Its totient is φ = 4228992.

The previous prime is 13480193. The next prime is 13480219. The reversal of 13480218 is 81208431.

13480218 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12552849 + 927369 = 3543^2 + 963^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13480191 and 13480200.

It is not an unprimeable number, because it can be changed into a prime (13480219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21721 + ... + 22332.

Almost surely, 213480218 is an apocalyptic number.

13480218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13480218 is an abundant number, since it is smaller than the sum of its proper divisors (17445690).

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

13480218 is a wasteful number, since it uses less digits than its factorization.

13480218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44078 (or 44075 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 13480218 is about 3671.5416380589. The cubic root of 13480218 is about 237.9937973574.

Adding to 13480218 its reverse (81208431), we get a palindrome (94688649).

The spelling of 13480218 in words is "thirteen million, four hundred eighty thousand, two hundred eighteen".

Divisors: 1 2 3 6 9 17 18 34 51 102 153 306 44053 88106 132159 264318 396477 748901 792954 1497802 2246703 4493406 6740109 13480218