728203434 has 16 divisors (see below), whose sum is σ = 1664465088. Its totient is φ = 208058112.

The previous prime is 728203433. The next prime is 728203471. The reversal of 728203434 is 434302827.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 728203395 and 728203404.

It is not an unprimeable number, because it can be changed into a prime (728203433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8669047 + ... + 8669130.

It is an arithmetic number, because the mean of its divisors is an integer number (104029068).

Almost surely, 2^728203434 is an apocalyptic number.

728203434 is an abundant number, since it is smaller than the sum of its proper divisors (936261654).

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

728203434 is a wasteful number, since it uses less digits than its factorization.

728203434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17338189.

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 728203434 is about 26985.2447459718. The cubic root of 728203434 is about 899.6720755936.

The spelling of 728203434 in words is "seven hundred twenty-eight million, two hundred three thousand, four hundred thirty-four".