728833878 has 24 divisors (see below), whose sum is σ = 1589204448. Its totient is φ = 241396272.

The previous prime is 728833837. The next prime is 728833907. The reversal of 728833878 is 878338827.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126126 + ... + 131777.

It is an arithmetic number, because the mean of its divisors is an integer number (66216852).

Almost surely, 2^728833878 is an apocalyptic number.

728833878 is an abundant number, since it is smaller than the sum of its proper divisors (860370570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728833878 is a wasteful number, since it uses less digits than its factorization.

728833878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258068 (or 258065 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The square root of 728833878 is about 26996.9234913906. The cubic root of 728833878 is about 899.9316318436.

The spelling of 728833878 in words is "seven hundred twenty-eight million, eight hundred thirty-three thousand, eight hundred seventy-eight".