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13444285 = 515117807
BaseRepresentation
bin110011010010…
…010010111101
3221022001002111
4303102102331
511420204120
61200054021
7222163111
oct63222275
927261074
1013444285
117652988
124604311
132a294ca
141add741
1512a875a
hexcd24bd

13444285 has 8 divisors (see below), whose sum is σ = 16240896. Its totient is φ = 10683600.

The previous prime is 13444279. The next prime is 13444307. The reversal of 13444285 is 58244431.

13444285 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13444285 - 25 = 13444253 is a prime.

It is a super-2 number, since 2×134442852 = 361497598322450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 8149 + ... + 9658.

It is an arithmetic number, because the mean of its divisors is an integer number (2030112).

Almost surely, 213444285 is an apocalyptic number.

It is an amenable number.

13444285 is a deficient number, since it is larger than the sum of its proper divisors (2796611).

13444285 is a wasteful number, since it uses less digits than its factorization.

13444285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17963.

The product of its digits is 15360, while the sum is 31.

The square root of 13444285 is about 3666.6449241780. The cubic root of 13444285 is about 237.7821429907.

The spelling of 13444285 in words is "thirteen million, four hundred forty-four thousand, two hundred eighty-five".

Divisors: 1 5 151 755 17807 89035 2688857 13444285