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211385049 = 385782219
BaseRepresentation
bin11001001100101…
…11101011011001
3112201202110202220
430212113223121
5413103310144
632550414253
75144512641
oct1446275331
9481673686
10211385049
11a9359797
125a961389
1334a42415
1420107521
1513857919
hexc997ad9

211385049 has 8 divisors (see below), whose sum is σ = 282179040. Its totient is φ = 140757216.

The previous prime is 211385047. The next prime is 211385059. The reversal of 211385049 is 940583112.

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

It is not a de Polignac number, because 211385049 - 21 = 211385047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211385047) 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, 38539 + ... + 43680.

It is an arithmetic number, because the mean of its divisors is an integer number (35272380).

Almost surely, 2211385049 is an apocalyptic number.

It is an amenable number.

211385049 is a deficient number, since it is larger than the sum of its proper divisors (70793991).

211385049 is an equidigital number, since it uses as much as digits as its factorization.

211385049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83079.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 211385049 is about 14539.0869383191. The cubic root of 211385049 is about 595.6960984258.

The spelling of 211385049 in words is "two hundred eleven million, three hundred eighty-five thousand, forty-nine".

Divisors: 1 3 857 2571 82219 246657 70461683 211385049