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212300232020 = 22577213137477
BaseRepresentation
bin1100010110111000010…
…1000111010101010100
3202021222120100012202022
43011232011013111110
511434242324411040
6241310202432312
721223666124522
oct3055605072524
9667876305668
10212300232020
1182043a45608
123518ab02698
1317034733286
14a3bd933312
1557c824c6b5
hex316e147554

212300232020 has 24 divisors (see below), whose sum is σ = 445839504264. Its totient is φ = 84918375296.

The previous prime is 212300232019. The next prime is 212300232049. The reversal of 212300232020 is 20232003212.

It can be written as a sum of positive squares in 4 ways, for example, as 63511056196 + 148789175824 = 252014^2 + 385732^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212300232020.

It is a congruent 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, 1475522 + ... + 1612998.

It is an arithmetic number, because the mean of its divisors is an integer number (18576646011).

Almost surely, 2212300232020 is an apocalyptic number.

212300232020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212300232020 is an abundant number, since it is smaller than the sum of its proper divisors (233539272244).

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

212300232020 is a wasteful number, since it uses less digits than its factorization.

212300232020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214699 (or 214697 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 212300232020 its reverse (20232003212), we get a palindrome (232532235232).

The spelling of 212300232020 in words is "two hundred twelve billion, three hundred million, two hundred thirty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 77213 137477 154426 274954 308852 386065 549908 687385 772130 1374770 1544260 2749540 10615011601 21230023202 42460046404 53075058005 106150116010 212300232020