6432320 has 28 divisors (see below), whose sum is σ = 15317724. Its totient is φ = 2572800.

The previous prime is 6432301. The next prime is 6432329. The reversal of 6432320 is 232346.

It can be written as a sum of positive squares in 2 ways, for example, as 2238016 + 4194304 = 1496^2 + 2048^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 6432292 and 6432301.

It is not an unprimeable number, because it can be changed into a prime (6432329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9731 + ... + 10370.

Almost surely, 2^6432320 is an apocalyptic number.

It is an amenable number.

6432320 is an abundant number, since it is smaller than the sum of its proper divisors (8885404).

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

6432320 is a wasteful number, since it uses less digits than its factorization.

6432320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20118 (or 20108 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 6432320 is about 2536.2018847087. The cubic root of 6432320 is about 185.9755623654.

Adding to 6432320 its reverse (232346), we get a palindrome (6664666).

The spelling of 6432320 in words is "six million, four hundred thirty-two thousand, three hundred twenty".