6220388 has 24 divisors (see below), whose sum is σ = 11181240. Its totient is φ = 3027200.

The previous prime is 6220387. The next prime is 6220399. The reversal of 6220388 is 8830226.

It can be written as a sum of positive squares in 4 ways, for example, as 2951524 + 3268864 = 1718^2 + 1808^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6220388.

It is not an unprimeable number, because it can be changed into a prime (6220387) 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 7 ways as a sum of consecutive naturals, for example, 35870 + ... + 36042.

It is an arithmetic number, because the mean of its divisors is an integer number (465885).

Almost surely, 2^6220388 is an apocalyptic number.

It is an amenable number.

6220388 is a deficient number, since it is larger than the sum of its proper divisors (4960852).

6220388 is a wasteful number, since it uses less digits than its factorization.

6220388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 6220388 is about 2494.0705683681. The cubic root of 6220388 is about 183.9102035062.

The spelling of 6220388 in words is "six million, two hundred twenty thousand, three hundred eighty-eight".