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80349 = 326783
BaseRepresentation
bin10011100111011101
311002012220
4103213131
510032344
61415553
7453153
oct234735
9132186
1080349
1155405
123a5b9
132a759
14213d3
1518c19
hex139dd

80349 has 4 divisors (see below), whose sum is σ = 107136. Its totient is φ = 53564.

The previous prime is 80347. The next prime is 80363. The reversal of 80349 is 94308.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80349 - 21 = 80347 is a prime.

It is a D-number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80341) by changing a digit.

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, 13389 + ... + 13394.

It is an arithmetic number, because the mean of its divisors is an integer number (26784).

280349 is an apocalyptic number.

It is an amenable number.

80349 is a deficient number, since it is larger than the sum of its proper divisors (26787).

80349 is a wasteful number, since it uses less digits than its factorization.

80349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26786.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 80349 is about 283.4589917431. The cubic root of 80349 is about 43.1512610477.

The spelling of 80349 in words is "eighty thousand, three hundred forty-nine".

Divisors: 1 3 26783 80349