230189640 has 32 divisors (see below), whose sum is σ = 690569280. Its totient is φ = 61383872.

The previous prime is 230189629. The next prime is 230189657. The reversal of 230189640 is 46981032.

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 7 ways as a sum of consecutive naturals, for example, 959004 + ... + 959243.

It is an arithmetic number, because the mean of its divisors is an integer number (21580290).

Almost surely, 2^230189640 is an apocalyptic number.

230189640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230189640 is an abundant number, since it is smaller than the sum of its proper divisors (460379640).

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

230189640 is a wasteful number, since it uses less digits than its factorization.

230189640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918261 (or 1918257 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 230189640 is about 15172.0018455048. The cubic root of 230189640 is about 612.8609140433.

The spelling of 230189640 in words is "two hundred thirty million, one hundred eighty-nine thousand, six hundred forty".