230640406 has 8 divisors (see below), whose sum is σ = 346039344. Its totient is φ = 115293960.

The previous prime is 230640391. The next prime is 230640407. The reversal of 230640406 is 604046032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230640407) 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 3 ways as a sum of consecutive naturals, for example, 831 + ... + 21493.

It is an arithmetic number, because the mean of its divisors is an integer number (43254918).

Almost surely, 2^230640406 is an apocalyptic number.

230640406 is a deficient number, since it is larger than the sum of its proper divisors (115398938).

230640406 is a wasteful number, since it uses less digits than its factorization.

230640406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26246.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 230640406 is about 15186.8497720890. The cubic root of 230640406 is about 613.2606956222.

Adding to 230640406 its reverse (604046032), we get a palindrome (834686438).

The spelling of 230640406 in words is "two hundred thirty million, six hundred forty thousand, four hundred six".