6430400 has 42 divisors (see below), whose sum is σ = 15826740. Its totient is φ = 2571520.

The previous prime is 6430381. The next prime is 6430427. The reversal of 6430400 is 40346.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 410 + ... + 3609.

Almost surely, 2^6430400 is an apocalyptic number.

It is an amenable number.

6430400 is an abundant number, since it is smaller than the sum of its proper divisors (9396340).

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

6430400 is a wasteful number, since it uses less digits than its factorization.

6430400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041 (or 4026 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 6430400 is about 2535.8233376953. The cubic root of 6430400 is about 185.9570564135.

Adding to 6430400 its reverse (40346), we get a palindrome (6470746).

The spelling of 6430400 in words is "six million, four hundred thirty thousand, four hundred".