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2205712471 = 28370910993
BaseRepresentation
bin1000001101111000…
…1000000001010111
312200201102210200111
42003132020001113
514004130244341
61002512023451
7105442150414
oct20336100127
95621383614
102205712471
11a32081476
12516831b87
13291c81811
1416cd2710b
15cd999681
hex83788057

2205712471 has 8 divisors (see below), whose sum is σ = 2216830160. Its totient is φ = 2194618752.

The previous prime is 2205712433. The next prime is 2205712493. The reversal of 2205712471 is 1742175022.

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 2205712471 - 213 = 2205704279 is a prime.

It is a super-3 number, since 3×22057124713 (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205712871) 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, 195151 + ... + 206143.

It is an arithmetic number, because the mean of its divisors is an integer number (277103770).

Almost surely, 22205712471 is an apocalyptic number.

2205712471 is a deficient number, since it is larger than the sum of its proper divisors (11117689).

2205712471 is a wasteful number, since it uses less digits than its factorization.

2205712471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11985.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 2205712471 is about 46965.0132651956. The cubic root of 2205712471 is about 1301.7161695301.

Adding to 2205712471 its reverse (1742175022), we get a palindrome (3947887493).

The spelling of 2205712471 in words is "two billion, two hundred five million, seven hundred twelve thousand, four hundred seventy-one".

Divisors: 1 283 709 10993 200647 3111019 7794037 2205712471