728573878 has 8 divisors (see below), whose sum is σ = 1096723368. Its totient is φ = 362999424.

The previous prime is 728573869. The next prime is 728573929. The reversal of 728573878 is 878375827.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643051 + ... + 644182.

It is an arithmetic number, because the mean of its divisors is an integer number (137090421).

Almost surely, 2^728573878 is an apocalyptic number.

728573878 is a deficient number, since it is larger than the sum of its proper divisors (368149490).

728573878 is a wasteful number, since it uses less digits than its factorization.

728573878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287518.

The product of its digits is 5268480, while the sum is 55.

The square root of 728573878 is about 26992.1076983625. The cubic root of 728573878 is about 899.8246069737.

The spelling of 728573878 in words is "seven hundred twenty-eight million, five hundred seventy-three thousand, eight hundred seventy-eight".