38640910 has 96 divisors (see below), whose sum is σ = 90419328. Its totient is φ = 11753280.

The previous prime is 38640907. The next prime is 38640937. The reversal of 38640910 is 1904683.

38640910 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 47 ways as a sum of consecutive naturals, for example, 361077 + ... + 361183.

It is an arithmetic number, because the mean of its divisors is an integer number (941868).

Almost surely, 2^38640910 is an apocalyptic number.

38640910 is an abundant number, since it is smaller than the sum of its proper divisors (51778418).

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

38640910 is a wasteful number, since it uses less digits than its factorization.

38640910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 38640910 is about 6216.1813036622. The cubic root of 38640910 is about 338.0771213910.

The spelling of 38640910 in words is "thirty-eight million, six hundred forty thousand, nine hundred ten".