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80107843 = 544114723
BaseRepresentation
bin1001100011001…
…01100101000011
312120201220022011
410301211211003
5131001422333
611540553351
71661622364
oct461454503
9176656264
1080107843
1141245232
12229b2857
131379a4ba
14a8d3b6b
1570759cd
hex4c65943

80107843 has 4 divisors (see below), whose sum is σ = 80128008. Its totient is φ = 80087680.

The previous prime is 80107829. The next prime is 80107861. The reversal of 80107843 is 34870108.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80107843 - 213 = 80099651 is a prime.

It is a super-2 number, since 2×801078432 = 12834533020225298, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80107243) 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, 1921 + ... + 12802.

It is an arithmetic number, because the mean of its divisors is an integer number (20032002).

Almost surely, 280107843 is an apocalyptic number.

80107843 is a deficient number, since it is larger than the sum of its proper divisors (20165).

80107843 is a wasteful number, since it uses less digits than its factorization.

80107843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20164.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 80107843 is about 8950.2984866428. The cubic root of 80107843 is about 431.0804683206.

The spelling of 80107843 in words is "eighty million, one hundred seven thousand, eight hundred forty-three".

Divisors: 1 5441 14723 80107843