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13231982 = 211175923
BaseRepresentation
bin110010011110…
…011101101110
3220220020212102
4302132131232
511341410412
61151335102
7220320131
oct62363556
926806772
1013231982
117518425
124521492
13298399a
141a86218
1512658c2
hexc9e76e

13231982 has 8 divisors (see below), whose sum is σ = 19869096. Its totient is φ = 6608952.

The previous prime is 13231973. The next prime is 13231987. The reversal of 13231982 is 28913231.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231987) 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, 728 + ... + 5195.

It is an arithmetic number, because the mean of its divisors is an integer number (2483637).

Almost surely, 213231982 is an apocalyptic number.

13231982 is a deficient number, since it is larger than the sum of its proper divisors (6637114).

13231982 is a wasteful number, since it uses less digits than its factorization.

13231982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7042.

The product of its digits is 2592, while the sum is 29.

The square root of 13231982 is about 3637.5791400326. The cubic root of 13231982 is about 236.5238650087.

The spelling of 13231982 in words is "thirteen million, two hundred thirty-one thousand, nine hundred eighty-two".

Divisors: 1 2 1117 2234 5923 11846 6615991 13231982