6280820 has 144 divisors (see below), whose sum is σ = 18098640. Its totient is φ = 1806336.

The previous prime is 6280801. The next prime is 6280843. The reversal of 6280820 is 280826.

It can be written as a sum of positive squares in 8 ways, for example, as 70756 + 6210064 = 266^2 + 2492^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 6280820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 216566 + ... + 216594.

It is an arithmetic number, because the mean of its divisors is an integer number (125685).

Almost surely, 2^6280820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6280820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9049320).

6280820 is an abundant number, since it is smaller than the sum of its proper divisors (11817820).

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

6280820 is a wasteful number, since it uses less digits than its factorization.

6280820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 6280820 is about 2506.1564196993. The cubic root of 6280820 is about 184.5038568730.

The spelling of 6280820 in words is "six million, two hundred eighty thousand, eight hundred twenty".