728480455 has 8 divisors (see below), whose sum is σ = 878028912. Its totient is φ = 580216128.

The previous prime is 728480443. The next prime is 728480461. The reversal of 728480455 is 554084827.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 728480455 - 2⁷ = 728480327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319782 + ... + 322051.

It is an arithmetic number, because the mean of its divisors is an integer number (109753614).

Almost surely, 2^728480455 is an apocalyptic number.

728480455 is a deficient number, since it is larger than the sum of its proper divisors (149548457).

728480455 is a wasteful number, since it uses less digits than its factorization.

728480455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642065.

The product of its (nonzero) digits is 358400, while the sum is 43.

The square root of 728480455 is about 26990.3770814711. The cubic root of 728480455 is about 899.7861446616.

The spelling of 728480455 in words is "seven hundred twenty-eight million, four hundred eighty thousand, four hundred fifty-five".