6402830 has 48 divisors (see below), whose sum is σ = 13666320. Its totient is φ = 2153088.

The previous prime is 6402817. The next prime is 6402839. The reversal of 6402830 is 382046.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6402796 and 6402805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35681 + ... + 35859.

It is an arithmetic number, because the mean of its divisors is an integer number (284715).

Almost surely, 2^6402830 is an apocalyptic number.

6402830 is an abundant number, since it is smaller than the sum of its proper divisors (7263490).

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

6402830 is a wasteful number, since it uses less digits than its factorization.

6402830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 6402830 is about 2530.3813941776. The cubic root of 6402830 is about 185.6909153460.

Adding to 6402830 its reverse (382046), we get a palindrome (6784876).

The spelling of 6402830 in words is "six million, four hundred two thousand, eight hundred thirty".