38783840 has 24 divisors (see below), whose sum is σ = 91627200. Its totient is φ = 15513472.

The previous prime is 38783839. The next prime is 38783869. The reversal of 38783840 is 4838783.

38783840 is digitally balanced in base 2, 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, 121040 + ... + 121359.

It is an arithmetic number, because the mean of its divisors is an integer number (3817800).

Almost surely, 2^38783840 is an apocalyptic number.

It is an amenable number.

38783840 is an abundant number, since it is smaller than the sum of its proper divisors (52843360).

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

38783840 is a wasteful number, since it uses less digits than its factorization.

38783840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242414 (or 242406 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 38783840 is about 6227.6673000410. The cubic root of 38783840 is about 338.4934496295.

The spelling of 38783840 in words is "thirty-eight million, seven hundred eighty-three thousand, eight hundred forty".