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8027993 = 43918287
BaseRepresentation
bin11110100111111101011001
3120002212100002
4132213331121
54023343433
6444022345
7125144141
oct36477531
916085302
108027993
114593606
1228319b5
1318810bc
1410cd921
15a889e8
hex7a7f59

8027993 has 4 divisors (see below), whose sum is σ = 8046720. Its totient is φ = 8009268.

The previous prime is 8027969. The next prime is 8028019. The reversal of 8027993 is 3997208.

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 8027993 - 210 = 8026969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8027933) 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, 8705 + ... + 9582.

It is an arithmetic number, because the mean of its divisors is an integer number (2011680).

Almost surely, 28027993 is an apocalyptic number.

It is an amenable number.

8027993 is a deficient number, since it is larger than the sum of its proper divisors (18727).

8027993 is a wasteful number, since it uses less digits than its factorization.

8027993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18726.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 8027993 is about 2833.3713134709. The cubic root of 8027993 is about 200.2330034416.

The spelling of 8027993 in words is "eight million, twenty-seven thousand, nine hundred ninety-three".

Divisors: 1 439 18287 8027993