230728842 has 24 divisors (see below), whose sum is σ = 506956320. Its totient is φ = 75825960.

The previous prime is 230728831. The next prime is 230728867. The reversal of 230728842 is 248827032.

It is a junction number, because it is equal to n+sod(n) for n = 230728797 and 230728806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88992 + ... + 91547.

It is an arithmetic number, because the mean of its divisors is an integer number (21123180).

Almost surely, 2^230728842 is an apocalyptic number.

230728842 is an abundant number, since it is smaller than the sum of its proper divisors (276227478).

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

230728842 is a wasteful number, since it uses less digits than its factorization.

230728842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180618 (or 180615 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 230728842 is about 15189.7610909454. The cubic root of 230728842 is about 613.3390678287.

The spelling of 230728842 in words is "two hundred thirty million, seven hundred twenty-eight thousand, eight hundred forty-two".