230486640 has 80 divisors (see below), whose sum is σ = 720061056. Its totient is φ = 60985600.

The previous prime is 230486639. The next prime is 230486671. The reversal of 230486640 is 46684032.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27775 + ... + 35105.

Almost surely, 2^230486640 is an apocalyptic number.

230486640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230486640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360030528).

230486640 is an abundant number, since it is smaller than the sum of its proper divisors (489574416).

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

230486640 is a wasteful number, since it uses less digits than its factorization.

230486640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7478 (or 7472 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 230486640 is about 15181.7864561454. The cubic root of 230486640 is about 613.1243800917.

The spelling of 230486640 in words is "two hundred thirty million, four hundred eighty-six thousand, six hundred forty".