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13208180 = 225660409
BaseRepresentation
bin110010011000…
…101001110100
3220212001012212
4302120221310
511340130210
61151032552
7220160546
oct62305164
926761185
1013208180
117501557
12450b758
132975bbb
141a7b696
15125d805
hexc98a74

13208180 has 12 divisors (see below), whose sum is σ = 27737220. Its totient is φ = 5283264.

The previous prime is 13208159. The next prime is 13208203. The reversal of 13208180 is 8180231.

It can be written as a sum of positive squares in 2 ways, for example, as 5513104 + 7695076 = 2348^2 + 2774^2 .

It is a congruent number.

It is an unprimeable number.

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, 330185 + ... + 330224.

It is an arithmetic number, because the mean of its divisors is an integer number (2311435).

Almost surely, 213208180 is an apocalyptic number.

13208180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13208180 is an abundant number, since it is smaller than the sum of its proper divisors (14529040).

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

13208180 is a wasteful number, since it uses less digits than its factorization.

13208180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660418 (or 660416 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 13208180 is about 3634.3059860171. The cubic root of 13208180 is about 236.3819583251.

The spelling of 13208180 in words is "thirteen million, two hundred eight thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 660409 1320818 2641636 3302045 6604090 13208180