230445140 has 12 divisors (see below), whose sum is σ = 483934836. Its totient is φ = 92178048.

The previous prime is 230445109. The next prime is 230445161. The reversal of 230445140 is 41544032.

It can be written as a sum of positive squares in 2 ways, for example, as 111809476 + 118635664 = 10574^2 + 10892^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5761109 + ... + 5761148.

It is an arithmetic number, because the mean of its divisors is an integer number (40327903).

Almost surely, 2^230445140 is an apocalyptic number.

230445140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230445140 is an abundant number, since it is smaller than the sum of its proper divisors (253489696).

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

230445140 is a wasteful number, since it uses less digits than its factorization.

230445140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11522266 (or 11522264 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 230445140 is about 15180.4196252936. The cubic root of 230445140 is about 613.0875794206.

Adding to 230445140 its reverse (41544032), we get a palindrome (271989172).

The spelling of 230445140 in words is "two hundred thirty million, four hundred forty-five thousand, one hundred forty".