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20050093 = 72864299
BaseRepresentation
bin100110001111…
…1000010101101
31101201122120001
41030133002231
520113100333
61553424301
7332265040
oct114370255
941648501
1020050093
1110354a28
12686b091
13420017b
14293cc57
151b60b7d
hex131f0ad

20050093 has 4 divisors (see below), whose sum is σ = 22914400. Its totient is φ = 17185788.

The previous prime is 20050081. The next prime is 20050097. The reversal of 20050093 is 39005002.

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 20050093 - 221 = 17952941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20050093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20050097) 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, 1432143 + ... + 1432156.

It is an arithmetic number, because the mean of its divisors is an integer number (5728600).

Almost surely, 220050093 is an apocalyptic number.

It is an amenable number.

20050093 is a deficient number, since it is larger than the sum of its proper divisors (2864307).

20050093 is an equidigital number, since it uses as much as digits as its factorization.

20050093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864306.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 20050093 is about 4477.7330201788. The cubic root of 20050093 is about 271.6681949220.

Adding to 20050093 its reverse (39005002), we get a palindrome (59055095).

The spelling of 20050093 in words is "twenty million, fifty thousand, ninety-three".

Divisors: 1 7 2864299 20050093