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199027471 = 3122728283
BaseRepresentation
bin10111101110011…
…10101100001111
3111212111122100211
423313032230033
5401422334341
631425503251
74634464006
oct1367165417
9455448324
10199027471
11a2389315
12567a1b27
1332306746
141c60bc3d
1512716181
hexbdceb0f

199027471 has 8 divisors (see below), whose sum is σ = 206360064. Its totient is φ = 191751960.

The previous prime is 199027459. The next prime is 199027501. The reversal of 199027471 is 174720991.

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 199027471 - 27 = 199027343 is a prime.

It is a super-3 number, since 3×1990274713 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199024471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7105 + ... + 21178.

It is an arithmetic number, because the mean of its divisors is an integer number (25795008).

Almost surely, 2199027471 is an apocalyptic number.

199027471 is a deficient number, since it is larger than the sum of its proper divisors (7332593).

199027471 is a wasteful number, since it uses less digits than its factorization.

199027471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28541.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 199027471 is about 14107.7096298442. The cubic root of 199027471 is about 583.8541097000.

The spelling of 199027471 in words is "one hundred ninety-nine million, twenty-seven thousand, four hundred seventy-one".

Divisors: 1 31 227 7037 28283 876773 6420241 199027471