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13442165 = 511244403
BaseRepresentation
bin110011010001…
…110001110101
3221021221011222
4303101301311
511420122130
61200040125
7222153662
oct63216165
927257158
1013442165
117651330
124603045
132a28559
141adca69
1512a7ce5
hexcd1c75

13442165 has 8 divisors (see below), whose sum is σ = 17597088. Its totient is φ = 9776080.

The previous prime is 13442161. The next prime is 13442173. The reversal of 13442165 is 56124431.

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

It is not a de Polignac number, because 13442165 - 22 = 13442161 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13442161) by changing a digit.

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, 122147 + ... + 122256.

It is an arithmetic number, because the mean of its divisors is an integer number (2199636).

Almost surely, 213442165 is an apocalyptic number.

It is an amenable number.

13442165 is a deficient number, since it is larger than the sum of its proper divisors (4154923).

13442165 is a wasteful number, since it uses less digits than its factorization.

13442165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244419.

The product of its digits is 2880, while the sum is 26.

The square root of 13442165 is about 3666.3558201571. The cubic root of 13442165 is about 237.7696438844.

Adding to 13442165 its reverse (56124431), we get a palindrome (69566596).

The spelling of 13442165 in words is "thirteen million, four hundred forty-two thousand, one hundred sixty-five".

Divisors: 1 5 11 55 244403 1222015 2688433 13442165