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20027185 = 57354869
BaseRepresentation
bin100110001100…
…1011100110001
31101200111010121
41030121130301
520111332220
61553130241
7332141203
oct114313461
941614117
1020027185
11103397a2
126859981
1341c2909
142934773
151b58eaa
hex1319731

20027185 has 8 divisors (see below), whose sum is σ = 24362280. Its totient is φ = 15801984.

The previous prime is 20027179. The next prime is 20027213. The reversal of 20027185 is 58172002.

It can be written as a sum of positive squares in 4 ways, for example, as 304704 + 19722481 = 552^2 + 4441^2 .

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 20027185 - 23 = 20027177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27070 + ... + 27799.

It is an arithmetic number, because the mean of its divisors is an integer number (3045285).

Almost surely, 220027185 is an apocalyptic number.

It is an amenable number.

20027185 is a deficient number, since it is larger than the sum of its proper divisors (4335095).

20027185 is an equidigital number, since it uses as much as digits as its factorization.

20027185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54947.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 20027185 is about 4475.1742982816. The cubic root of 20027185 is about 271.5646917169.

Adding to 20027185 its reverse (58172002), we get a palindrome (78199187).

The spelling of 20027185 in words is "twenty million, twenty-seven thousand, one hundred eighty-five".

Divisors: 1 5 73 365 54869 274345 4005437 20027185