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212120514 = 23211784473
BaseRepresentation
bin11001010010010…
…11001111000010
3112210010211122100
430221023033002
5413300324024
633014251230
75153665104
oct1451131702
9483124570
10212120514
11a9811311
125b056b16
1334c3c0c8
1420259574
15139507c9
hexca4b3c2

212120514 has 12 divisors (see below), whose sum is σ = 459594486. Its totient is φ = 70706832.

The previous prime is 212120501. The next prime is 212120537. The reversal of 212120514 is 415021212.

It can be written as a sum of positive squares in only one way, i.e., 173369889 + 38750625 = 13167^2 + 6225^2 .

It is a super-2 number, since 2×2121205142 = 89990224919248392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11784473 = 212120514 / (2 + 1 + 2 + 1 + 2 + 0 + 5 + 1 + 4).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 5892219 + ... + 5892254.

Almost surely, 2212120514 is an apocalyptic number.

212120514 is an abundant number, since it is smaller than the sum of its proper divisors (247473972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212120514 is a wasteful number, since it uses less digits than its factorization.

212120514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11784481 (or 11784478 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 212120514 is about 14564.3576583384. The cubic root of 212120514 is about 596.3861606420.

Adding to 212120514 its reverse (415021212), we get a palindrome (627141726).

The spelling of 212120514 in words is "two hundred twelve million, one hundred twenty thousand, five hundred fourteen".

Divisors: 1 2 3 6 9 18 11784473 23568946 35353419 70706838 106060257 212120514