232749640 has 32 divisors (see below), whose sum is σ = 534833280. Its totient is φ = 91118272.

The previous prime is 232749619. The next prime is 232749641. The reversal of 232749640 is 46947232.

It is a self number, because there is not a number n which added to its sum of digits gives 232749640.

It is not an unprimeable number, because it can be changed into a prime (232749641) 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 7 ways as a sum of consecutive naturals, for example, 60022 + ... + 63781.

It is an arithmetic number, because the mean of its divisors is an integer number (16713540).

Almost surely, 2^232749640 is an apocalyptic number.

232749640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232749640 is an abundant number, since it is smaller than the sum of its proper divisors (302083640).

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

232749640 is a wasteful number, since it uses less digits than its factorization.

232749640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123861 (or 123857 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 232749640 is about 15256.1345038643. The cubic root of 232749640 is about 615.1244730099.

The spelling of 232749640 in words is "two hundred thirty-two million, seven hundred forty-nine thousand, six hundred forty".