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13271983 = 26095087
BaseRepresentation
bin110010101000…
…001110101111
3220222021201221
4302220032233
511344200413
61152244211
7220544554
oct62501657
926867657
1013271983
11754548a
124540667
132998c5a
141a96a2b
15127268d
hexca83af

13271983 has 4 divisors (see below), whose sum is σ = 13279680. Its totient is φ = 13264288.

The previous prime is 13271981. The next prime is 13272023. The reversal of 13271983 is 38917231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13271983 - 21 = 13271981 is a prime.

It is a super-2 number, since 2×132719832 = 352291065504578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13271981) 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 3 ways as a sum of consecutive naturals, for example, 66 + ... + 5152.

It is an arithmetic number, because the mean of its divisors is an integer number (3319920).

Almost surely, 213271983 is an apocalyptic number.

13271983 is a deficient number, since it is larger than the sum of its proper divisors (7697).

13271983 is an equidigital number, since it uses as much as digits as its factorization.

13271983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7696.

The product of its digits is 9072, while the sum is 34.

The square root of 13271983 is about 3643.0732905062. The cubic root of 13271983 is about 236.7619667334.

The spelling of 13271983 in words is "thirteen million, two hundred seventy-one thousand, nine hundred eighty-three".

Divisors: 1 2609 5087 13271983