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201372871 = 71712011409
BaseRepresentation
bin11000000000010…
…11010011000111
3112000220210122111
430000023103013
5403022412441
631552041451
74663432630
oct1400132307
9460823574
10201372871
11a3740467
1257533287
133294815b
141ca5c887
1512a2b081
hexc00b4c7

201372871 has 16 divisors (see below), whose sum is σ = 244054080. Its totient is φ = 162201600.

The previous prime is 201372799. The next prime is 201372881. The reversal of 201372871 is 178273102.

It is a cyclic number.

It is not a de Polignac number, because 201372871 - 215 = 201340103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201372881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142215 + ... + 143623.

It is an arithmetic number, because the mean of its divisors is an integer number (15253380).

Almost surely, 2201372871 is an apocalyptic number.

201372871 is a deficient number, since it is larger than the sum of its proper divisors (42681209).

201372871 is a wasteful number, since it uses less digits than its factorization.

201372871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 201372871 is about 14190.5909320225. The cubic root of 201372871 is about 586.1385972537.

The spelling of 201372871 in words is "two hundred one million, three hundred seventy-two thousand, eight hundred seventy-one".

Divisors: 1 7 17 119 1201 1409 8407 9863 20417 23953 142919 167671 1692209 11845463 28767553 201372871