728670473 has 16 divisors (see below), whose sum is σ = 789600960. Its totient is φ = 669897216.

The previous prime is 728670433. The next prime is 728670479. The reversal of 728670473 is 374076827.

It is a cyclic number.

It is not a de Polignac number, because 728670473 - 2²⁰ = 727621897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728670479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161261 + ... + 165717.

It is an arithmetic number, because the mean of its divisors is an integer number (49350060).

Almost surely, 2^728670473 is an apocalyptic number.

It is an amenable number.

728670473 is a deficient number, since it is larger than the sum of its proper divisors (60930487).

728670473 is a wasteful number, since it uses less digits than its factorization.

728670473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696.

The product of its (nonzero) digits is 395136, while the sum is 44.

The square root of 728670473 is about 26993.8969583867. The cubic root of 728670473 is about 899.8643717432.

The spelling of 728670473 in words is "seven hundred twenty-eight million, six hundred seventy thousand, four hundred seventy-three".