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210000985 = 5151278147
BaseRepresentation
bin11001000010001…
…01110001011001
3112122011011012021
430201011301121
5412230012420
632501014441
75126656525
oct1441056131
9478134167
10210000985
11a85a3937
125a3b4421
133467944c
141dc66d85
15136827aa
hexc845c59

210000985 has 8 divisors (see below), whose sum is σ = 253670976. Its totient is φ = 166887600.

The previous prime is 210000953. The next prime is 210001003. The reversal of 210000985 is 589000012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210000985 - 25 = 210000953 is a prime.

It is a super-3 number, since 3×2100009853 (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

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, 138319 + ... + 139828.

It is an arithmetic number, because the mean of its divisors is an integer number (31708872).

Almost surely, 2210000985 is an apocalyptic number.

It is an amenable number.

210000985 is a deficient number, since it is larger than the sum of its proper divisors (43669991).

210000985 is a wasteful number, since it uses less digits than its factorization.

210000985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278303.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 210000985 is about 14491.4107318784. The cubic root of 210000985 is about 594.3931246023.

Adding to 210000985 its reverse (589000012), we get a palindrome (799000997).

The spelling of 210000985 in words is "two hundred ten million, nine hundred eighty-five", and thus it is an aban number.

Divisors: 1 5 151 755 278147 1390735 42000197 210000985