230643240 has 32 divisors (see below), whose sum is σ = 691930080. Its totient is φ = 61504832.

The previous prime is 230643239. The next prime is 230643251. The reversal of 230643240 is 42346032.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 230643240.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 960894 + ... + 961133.

It is an arithmetic number, because the mean of its divisors is an integer number (21622815).

Almost surely, 2^230643240 is an apocalyptic number.

230643240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230643240 is an abundant number, since it is smaller than the sum of its proper divisors (461286840).

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

230643240 is a wasteful number, since it uses less digits than its factorization.

230643240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922041 (or 1922037 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 230643240 is about 15186.9430762086. The cubic root of 230643240 is about 613.2632074308.

Adding to 230643240 its reverse (42346032), we get a palindrome (272989272).

The spelling of 230643240 in words is "two hundred thirty million, six hundred forty-three thousand, two hundred forty".