728873841 has 16 divisors (see below), whose sum is σ = 1041496704. Its totient is φ = 452225664.

The previous prime is 728873837. The next prime is 728873903. The reversal of 728873841 is 148378827.

It is a happy number.

It is not a de Polignac number, because 728873841 - 2² = 728873837 is a prime.

It is a super-3 number, since 3×728873841³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (728873141) 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, 140196 + ... + 145301.

It is an arithmetic number, because the mean of its divisors is an integer number (65093544).

Almost surely, 2^728873841 is an apocalyptic number.

It is an amenable number.

728873841 is a deficient number, since it is larger than the sum of its proper divisors (312622863).

728873841 is a wasteful number, since it uses less digits than its factorization.

728873841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285560.

The product of its digits is 602112, while the sum is 48.

The square root of 728873841 is about 26997.6636211358. The cubic root of 728873841 is about 899.9480797209.

The spelling of 728873841 in words is "seven hundred twenty-eight million, eight hundred seventy-three thousand, eight hundred forty-one".