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212052808 = 231119912109
BaseRepresentation
bin11001010001110…
…10101101001000
3112210000101202201
430220322231020
5413241142213
633013005544
75153263522
oct1450725510
9483011681
10212052808
11a9775460
125b0238b4
1334c17346
142023ca12
151393a6dd
hexca3ab48

212052808 has 32 divisors (see below), whose sum is σ = 435960000. Its totient is φ = 95895360.

The previous prime is 212052793. The next prime is 212052811. The reversal of 212052808 is 808250212.

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 7 ways as a sum of consecutive naturals, for example, 11458 + ... + 23566.

It is an arithmetic number, because the mean of its divisors is an integer number (13623750).

Almost surely, 2212052808 is an apocalyptic number.

It is an amenable number.

212052808 is an abundant number, since it is smaller than the sum of its proper divisors (223907192).

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

212052808 is a wasteful number, since it uses less digits than its factorization.

212052808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12325 (or 12321 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 212052808 is about 14562.0330998113. The cubic root of 212052808 is about 596.3227010901.

The spelling of 212052808 in words is "two hundred twelve million, fifty-two thousand, eight hundred eight".

Divisors: 1 2 4 8 11 22 44 88 199 398 796 1592 2189 4378 8756 12109 17512 24218 48436 96872 133199 266398 532796 1065592 2409691 4819382 9638764 19277528 26506601 53013202 106026404 212052808