728631798 has 32 divisors (see below), whose sum is σ = 1624199040. Its totient is φ = 216558720.

The previous prime is 728631793. The next prime is 728631811. The reversal of 728631798 is 897136827.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 728631798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728631793) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 186048 + ... + 189923.

It is an arithmetic number, because the mean of its divisors is an integer number (50756220).

Almost surely, 2^728631798 is an apocalyptic number.

728631798 is an abundant number, since it is smaller than the sum of its proper divisors (895567242).

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

728631798 is a wasteful number, since it uses less digits than its factorization.

728631798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376012.

The product of its digits is 1016064, while the sum is 51.

The square root of 728631798 is about 26993.1805832510. The cubic root of 728631798 is about 899.8484510257.

The spelling of 728631798 in words is "seven hundred twenty-eight million, six hundred thirty-one thousand, seven hundred ninety-eight".