728879835 has 16 divisors (see below), whose sum is σ = 1197727776. Its totient is φ = 378229248.

The previous prime is 728879831. The next prime is 728879891. The reversal of 728879835 is 538978827.

It is a happy number.

It is not a de Polignac number, because 728879835 - 2² = 728879831 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728879831) 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, 656094 + ... + 657203.

It is an arithmetic number, because the mean of its divisors is an integer number (74857986).

Almost surely, 2^728879835 is an apocalyptic number.

728879835 is a deficient number, since it is larger than the sum of its proper divisors (468847941).

728879835 is a wasteful number, since it uses less digits than its factorization.

728879835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313342.

The product of its digits is 6773760, while the sum is 57.

The square root of 728879835 is about 26997.7746305135. The cubic root of 728879835 is about 899.9505466654.

The spelling of 728879835 in words is "seven hundred twenty-eight million, eight hundred seventy-nine thousand, eight hundred thirty-five".