230723028 has 36 divisors (see below), whose sum is σ = 608575968. Its totient is φ = 73563600.

The previous prime is 230723021. The next prime is 230723029. The reversal of 230723028 is 820327032.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 230722992 and 230723010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230723021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138498 + ... + 140153.

It is an arithmetic number, because the mean of its divisors is an integer number (16904888).

Almost surely, 2^230723028 is an apocalyptic number.

It is an amenable number.

230723028 is an abundant number, since it is smaller than the sum of its proper divisors (377852940).

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

230723028 is a wasteful number, since it uses less digits than its factorization.

230723028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278684 (or 278679 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 230723028 is about 15189.5697108246. The cubic root of 230723028 is about 613.3339160622. Note that the first 3 decimals are identical.

The spelling of 230723028 in words is "two hundred thirty million, seven hundred twenty-three thousand, twenty-eight".