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7983013 = 17469589
BaseRepresentation
bin11110011100111110100101
3120000120122011
4132130332211
54020424023
6443034221
7124566043
oct36347645
916016564
107983013
114562835
12280b971
13186679c
1410bb393
15a7a50d
hex79cfa5

7983013 has 4 divisors (see below), whose sum is σ = 8452620. Its totient is φ = 7513408.

The previous prime is 7982999. The next prime is 7983037. The reversal of 7983013 is 3103897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3103897 = 19163363.

It can be written as a sum of positive squares in 2 ways, for example, as 5678689 + 2304324 = 2383^2 + 1518^2 .

It is a cyclic number.

It is not a de Polignac number, because 7983013 - 25 = 7982981 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 (7983043) 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, 234778 + ... + 234811.

It is an arithmetic number, because the mean of its divisors is an integer number (2113155).

Almost surely, 27983013 is an apocalyptic number.

It is an amenable number.

7983013 is a deficient number, since it is larger than the sum of its proper divisors (469607).

7983013 is a wasteful number, since it uses less digits than its factorization.

7983013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469606.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 7983013 is about 2825.4226232548. The cubic root of 7983013 is about 199.8583413545.

The spelling of 7983013 in words is "seven million, nine hundred eighty-three thousand, thirteen".

Divisors: 1 17 469589 7983013