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13442860 = 225672143
BaseRepresentation
bin110011010001…
…111100101100
3221021222010201
4303101330230
511420132420
61200043244
7222156004
oct63217454
927258121
1013442860
117651902
124603524
132a28972
141add004
1512a810a
hexcd1f2c

13442860 has 12 divisors (see below), whose sum is σ = 28230048. Its totient is φ = 5377136.

The previous prime is 13442857. The next prime is 13442873. The reversal of 13442860 is 6824431.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336052 + ... + 336091.

It is an arithmetic number, because the mean of its divisors is an integer number (2352504).

Almost surely, 213442860 is an apocalyptic number.

13442860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13442860 is an abundant number, since it is smaller than the sum of its proper divisors (14787188).

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

13442860 is a wasteful number, since it uses less digits than its factorization.

13442860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672152 (or 672150 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 13442860 is about 3666.4505996945. The cubic root of 13442860 is about 237.7737416136.

The spelling of 13442860 in words is "thirteen million, four hundred forty-two thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 672143 1344286 2688572 3360715 6721430 13442860