728334463 has 4 divisors (see below), whose sum is σ = 728403760. Its totient is φ = 728265168.

The previous prime is 728334389. The next prime is 728334469. The reversal of 728334463 is 364433827.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728334463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728334469) 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, 15270 + ... + 41107.

It is an arithmetic number, because the mean of its divisors is an integer number (182100940).

Almost surely, 2^728334463 is an apocalyptic number.

728334463 is a deficient number, since it is larger than the sum of its proper divisors (69297).

728334463 is a wasteful number, since it uses less digits than its factorization.

728334463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69296.

The product of its digits is 290304, while the sum is 40.

The square root of 728334463 is about 26987.6724264987. The cubic root of 728334463 is about 899.7260330717.

The spelling of 728334463 in words is "seven hundred twenty-eight million, three hundred thirty-four thousand, four hundred sixty-three".