230605640 has 32 divisors (see below), whose sum is σ = 519298560. Its totient is φ = 92164800.

The previous prime is 230605591. The next prime is 230605643. The reversal of 230605640 is 46506032.

It is a super-2 number, since 2×230605640² = 106357922399619200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (230605643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83075 + ... + 85805.

It is an arithmetic number, because the mean of its divisors is an integer number (16228080).

Almost surely, 2^230605640 is an apocalyptic number.

230605640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230605640 is an abundant number, since it is smaller than the sum of its proper divisors (288692920).

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

230605640 is a wasteful number, since it uses less digits than its factorization.

230605640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4853 (or 4849 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 230605640 is about 15185.7051202768. The cubic root of 230605640 is about 613.2298804193.

The spelling of 230605640 in words is "two hundred thirty million, six hundred five thousand, six hundred forty".