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212774574080 = 211520778767
BaseRepresentation
bin1100011000101001011…
…0100101100000000000
3202100012121220021201202
43012022112211200000
511441230242332310
6241425225320332
721241516016135
oct3061226454000
9670177807652
10212774574080
1182267777842
12352a19360a8
13170abaa3853
14a42692a58c
155804be83a5
hex318a5a5800

212774574080 has 48 divisors (see below), whose sum is σ = 510534329760. Its totient is φ = 85109825536.

The previous prime is 212774574071. The next prime is 212774574083. The reversal of 212774574080 is 80475477212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212774574083) 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, 10379144 + ... + 10399623.

It is an arithmetic number, because the mean of its divisors is an integer number (10636131870).

Almost surely, 2212774574080 is an apocalyptic number.

212774574080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212774574080 is an abundant number, since it is smaller than the sum of its proper divisors (297759755680).

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

212774574080 is an equidigital number, since it uses as much as digits as its factorization.

212774574080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20778794 (or 20778774 counting only the distinct ones).

The product of its (nonzero) digits is 878080, while the sum is 47.

The spelling of 212774574080 in words is "two hundred twelve billion, seven hundred seventy-four million, five hundred seventy-four thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 512 640 1024 1280 2048 2560 5120 10240 20778767 41557534 83115068 103893835 166230136 207787670 332460272 415575340 664920544 831150680 1329841088 1662301360 2659682176 3324602720 5319364352 6649205440 10638728704 13298410880 21277457408 26596821760 42554914816 53193643520 106387287040 212774574080