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210372085 = 57111928759
BaseRepresentation
bin11001000101000…
…00010111110101
3112122212000020201
430202200113311
5412323401320
632513000501
75133063460
oct1442402765
9478760221
10210372085
11a8827730
125a553131
1334779331
141dd222d7
151370770a
hexc8a05f5

210372085 has 32 divisors (see below), whose sum is σ = 331315200. Its totient is φ = 124234560.

The previous prime is 210372083. The next prime is 210372089. The reversal of 210372085 is 580273012.

It is not a de Polignac number, because 210372085 - 21 = 210372083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210372083) 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 31 ways as a sum of consecutive naturals, for example, 7065 + ... + 21694.

It is an arithmetic number, because the mean of its divisors is an integer number (10353600).

Almost surely, 2210372085 is an apocalyptic number.

It is an amenable number.

210372085 is a deficient number, since it is larger than the sum of its proper divisors (120943115).

210372085 is a wasteful number, since it uses less digits than its factorization.

210372085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28801.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 210372085 is about 14504.2092166378. The cubic root of 210372085 is about 594.7430427783.

The spelling of 210372085 in words is "two hundred ten million, three hundred seventy-two thousand, eighty-five".

Divisors: 1 5 7 11 19 35 55 77 95 133 209 385 665 1045 1463 7315 28759 143795 201313 316349 546421 1006565 1581745 2214443 2732105 3824947 6010631 11072215 19124735 30053155 42074417 210372085