433478728 has 16 divisors (see below), whose sum is σ = 818622000. Its totient is φ = 215179536.

The previous prime is 433478713. The next prime is 433478729. The reversal of 433478728 is 827874334.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (433478729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193798 + ... + 196021.

It is an arithmetic number, because the mean of its divisors is an integer number (51163875).

Almost surely, 2^433478728 is an apocalyptic number.

It is an amenable number.

433478728 is a deficient number, since it is larger than the sum of its proper divisors (385143272).

433478728 is a wasteful number, since it uses less digits than its factorization.

433478728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389964 (or 389960 counting only the distinct ones).

The product of its digits is 903168, while the sum is 46.

The square root of 433478728 is about 20820.1519687057. The cubic root of 433478728 is about 756.8141849388.

The spelling of 433478728 in words is "four hundred thirty-three million, four hundred seventy-eight thousand, seven hundred twenty-eight".