728994223 has 16 divisors (see below), whose sum is σ = 802068480. Its totient is φ = 659492064.

The previous prime is 728994209. The next prime is 728994241. The reversal of 728994223 is 322499827.

It is not a de Polignac number, because 728994223 - 2²¹ = 726897071 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 (728992223) 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, 376165 + ... + 378097.

It is an arithmetic number, because the mean of its divisors is an integer number (50129280).

Almost surely, 2^728994223 is an apocalyptic number.

728994223 is a deficient number, since it is larger than the sum of its proper divisors (73074257).

728994223 is a wasteful number, since it uses less digits than its factorization.

728994223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838.

The product of its digits is 435456, while the sum is 46.

The square root of 728994223 is about 26999.8930183066. The cubic root of 728994223 is about 899.9976226275.

The spelling of 728994223 in words is "seven hundred twenty-eight million, nine hundred ninety-four thousand, two hundred twenty-three".