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13182280 = 235329557
BaseRepresentation
bin110010010010…
…010101001000
3220210201200121
4302102111020
511333313110
61150313024
7220022206
oct62222510
926721617
1013182280
117494051
1244b8774
132967187
141a72076
151255cda
hexc92548

13182280 has 16 divisors (see below), whose sum is σ = 29660220. Its totient is φ = 5272896.

The previous prime is 13182271. The next prime is 13182287. The reversal of 13182280 is 8228131.

It can be written as a sum of positive squares in 2 ways, for example, as 11985444 + 1196836 = 3462^2 + 1094^2 .

It is not an unprimeable number, because it can be changed into a prime (13182287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164739 + ... + 164818.

Almost surely, 213182280 is an apocalyptic number.

13182280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13182280 is an abundant number, since it is smaller than the sum of its proper divisors (16477940).

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

13182280 is a wasteful number, since it uses less digits than its factorization.

13182280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329568 (or 329564 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 13182280 is about 3630.7409712068. The cubic root of 13182280 is about 236.2273496197.

The spelling of 13182280 in words is "thirteen million, one hundred eighty-two thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 329557 659114 1318228 1647785 2636456 3295570 6591140 13182280