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20075993 = 79729567
BaseRepresentation
bin100110010010…
…1010111011001
31101202222002022
41030211113121
520114412433
61554144225
7332433410
oct114452731
941688068
1020075993
1110372433
126882075
13420bbb2
142948477
151b68698
hex13255d9

20075993 has 8 divisors (see below), whose sum is σ = 23181312. Its totient is φ = 17030016.

The previous prime is 20075981. The next prime is 20075999. The reversal of 20075993 is 39957002.

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

It is a cyclic number.

It is not a de Polignac number, because 20075993 - 216 = 20010457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20075999) 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 7 ways as a sum of consecutive naturals, for example, 14105 + ... + 15462.

It is an arithmetic number, because the mean of its divisors is an integer number (2897664).

Almost surely, 220075993 is an apocalyptic number.

It is an amenable number.

20075993 is a deficient number, since it is larger than the sum of its proper divisors (3105319).

20075993 is an equidigital number, since it uses as much as digits as its factorization.

20075993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29671.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 20075993 is about 4480.6241752684. The cubic root of 20075993 is about 271.7851217066.

It can be divided in two parts, 2007 and 5993, that added together give a cube (8000 = 203).

The spelling of 20075993 in words is "twenty million, seventy-five thousand, nine hundred ninety-three".

Divisors: 1 7 97 679 29567 206969 2867999 20075993