433081728 has 80 divisors (see below), whose sum is σ = 1288875060. Its totient is φ = 144357120.

The previous prime is 433081717. The next prime is 433081787. The reversal of 433081728 is 827180334.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 433081692 and 433081701.

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 10518 + ... + 31253.

Almost surely, 2^433081728 is an apocalyptic number.

433081728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

433081728 is an abundant number, since it is smaller than the sum of its proper divisors (855793332).

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

433081728 is an equidigital number, since it uses as much as digits as its factorization.

433081728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41797 (or 41776 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 433081728 is about 20810.6157525432. The cubic root of 433081728 is about 756.5830724818.

The spelling of 433081728 in words is "four hundred thirty-three million, eighty-one thousand, seven hundred twenty-eight".