433240640 has 112 divisors (see below), whose sum is σ = 1185062400. Its totient is φ = 147781632.

The previous prime is 433240637. The next prime is 433240649. The reversal of 433240640 is 46042334.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (433240649) 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 15 ways as a sum of consecutive naturals, for example, 602201 + ... + 602919.

Almost surely, 2^433240640 is an apocalyptic number.

433240640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 433240640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (592531200).

433240640 is an abundant number, since it is smaller than the sum of its proper divisors (751821760).

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

433240640 is a wasteful number, since it uses less digits than its factorization.

433240640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012 (or 1002 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 433240640 is about 20814.4334537359. The cubic root of 433240640 is about 756.6755996108.

Adding to 433240640 its reverse (46042334), we get a palindrome (479282974).

The spelling of 433240640 in words is "four hundred thirty-three million, two hundred forty thousand, six hundred forty".