Search a number
-
+
6804620420 = 2251337707341
BaseRepresentation
bin1100101011001011…
…00100010010000100
3122120020002112101112
412111211210102010
5102413440323140
63043114344152
7330424214333
oct62545442204
918506075345
106804620420
112982038044
12139aa2b058
138459a8a20
14487a1bd1a
1529c5c3c65
hex195964484

6804620420 has 48 divisors (see below), whose sum is σ = 15804849648. Its totient is φ = 2444567040.

The previous prime is 6804620393. The next prime is 6804620429. The reversal of 6804620420 is 240264086.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1058070784 + 5746549636 = 32528^2 + 75806^2 .

It is not an unprimeable number, because it can be changed into a prime (6804620429) 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 15 ways as a sum of consecutive naturals, for example, 344051 + ... + 363290.

It is an arithmetic number, because the mean of its divisors is an integer number (329267701).

Almost surely, 26804620420 is an apocalyptic number.

It is an amenable number.

6804620420 is an abundant number, since it is smaller than the sum of its proper divisors (9000229228).

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

6804620420 is a wasteful number, since it uses less digits than its factorization.

6804620420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707400 (or 707398 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 6804620420 is about 82490.1231663525. The cubic root of 6804620420 is about 1894.9654730170.

The spelling of 6804620420 in words is "six billion, eight hundred four million, six hundred twenty thousand, four hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 37 52 65 74 130 148 185 260 370 481 740 962 1924 2405 4810 9620 707341 1414682 2829364 3536705 7073410 9195433 14146820 18390866 26171617 36781732 45977165 52343234 91954330 104686468 130858085 183908660 261716170 340231021 523432340 680462042 1360924084 1701155105 3402310210 6804620420