728041819 has 8 divisors (see below), whose sum is σ = 736044192. Its totient is φ = 720081600.

The previous prime is 728041817. The next prime is 728041823. The reversal of 728041819 is 918140827.

It is a happy number.

728041819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 728041819 - 2¹ = 728041817 is a prime.

It is a super-2 number, since 2×728041819² = 1060089780425657522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728041817) 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, 24837 + ... + 45529.

It is an arithmetic number, because the mean of its divisors is an integer number (92005524).

Almost surely, 2^728041819 is an apocalyptic number.

728041819 is a deficient number, since it is larger than the sum of its proper divisors (8002373).

728041819 is a wasteful number, since it uses less digits than its factorization.

728041819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21077.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 728041819 is about 26982.2500729646. The cubic root of 728041819 is about 899.6055139463.

The spelling of 728041819 in words is "seven hundred twenty-eight million, forty-one thousand, eight hundred nineteen".