238303640 has 16 divisors (see below), whose sum is σ = 536183280. Its totient is φ = 95321440.

The previous prime is 238303631. The next prime is 238303651. The reversal of 238303640 is 46303832.

238303640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2978756 + ... + 2978835.

It is an arithmetic number, because the mean of its divisors is an integer number (33511455).

Almost surely, 2^238303640 is an apocalyptic number.

238303640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238303640 is an abundant number, since it is smaller than the sum of its proper divisors (297879640).

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

238303640 is a wasteful number, since it uses less digits than its factorization.

238303640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5957602 (or 5957598 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 238303640 is about 15437.0865126811. The cubic root of 238303640 is about 619.9788754509.

The spelling of 238303640 in words is "two hundred thirty-eight million, three hundred three thousand, six hundred forty".