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212512352 = 2513510847
BaseRepresentation
bin11001010101010…
…10111001100000
3112210212202010212
430222222321200
5413400343402
633030513252
75160216353
oct1452527140
9483782125
10212512352
11a9a59748
125b205828
1335048570
142031c29a
15139cb952
hexcaaae60

212512352 has 24 divisors (see below), whose sum is σ = 450567936. Its totient is φ = 98082432.

The previous prime is 212512337. The next prime is 212512357. The reversal of 212512352 is 253215212.

It is a super-2 number, since 2×2125123522 = 90322999505143808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212512357) 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 3 ways as a sum of consecutive naturals, for example, 255008 + ... + 255839.

It is an arithmetic number, because the mean of its divisors is an integer number (18773664).

Almost surely, 2212512352 is an apocalyptic number.

It is an amenable number.

212512352 is an abundant number, since it is smaller than the sum of its proper divisors (238055584).

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

212512352 is a wasteful number, since it uses less digits than its factorization.

212512352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510870 (or 510862 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 212512352 is about 14577.8034010615. The cubic root of 212512352 is about 596.7531580176.

Adding to 212512352 its reverse (253215212), we get a palindrome (465727564).

The spelling of 212512352 in words is "two hundred twelve million, five hundred twelve thousand, three hundred fifty-two".

Divisors: 1 2 4 8 13 16 26 32 52 104 208 416 510847 1021694 2043388 4086776 6641011 8173552 13282022 16347104 26564044 53128088 106256176 212512352