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6801220 = 225340061
BaseRepresentation
bin11001111100011101000100
3110210112112001
4121330131010
53220114340
6401435044
7111544426
oct31743504
913715461
106801220
113925948
12233ba84
1315418ba
14c90816
158e529a
hex67c744

6801220 has 12 divisors (see below), whose sum is σ = 14282604. Its totient is φ = 2720480.

The previous prime is 6801217. The next prime is 6801227. The reversal of 6801220 is 221086.

It is a happy number.

6801220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4946176 + 1855044 = 2224^2 + 1362^2 .

It is not an unprimeable number, because it can be changed into a prime (6801227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170011 + ... + 170050.

It is an arithmetic number, because the mean of its divisors is an integer number (1190217).

Almost surely, 26801220 is an apocalyptic number.

It is an amenable number.

6801220 is an abundant number, since it is smaller than the sum of its proper divisors (7481384).

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

6801220 is a wasteful number, since it uses less digits than its factorization.

6801220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340070 (or 340068 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 6801220 is about 2607.9148759114. The cubic root of 6801220 is about 189.4649768307.

It can be divided in two parts, 6801 and 220, that added together give a triangular number (7021 = T118).

The spelling of 6801220 in words is "six million, eight hundred one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 340061 680122 1360244 1700305 3400610 6801220