38643500 has 96 divisors (see below), whose sum is σ = 98577024. Its totient is φ = 12960000.

The previous prime is 38643491. The next prime is 38643569. The reversal of 38643500 is 534683.

38643500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 31 ways as a sum of consecutive naturals, for example, 213410 + ... + 213590.

It is an arithmetic number, because the mean of its divisors is an integer number (1026844).

Almost surely, 2^38643500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38643500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49288512).

38643500 is an abundant number, since it is smaller than the sum of its proper divisors (59933524).

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

38643500 is a wasteful number, since it uses less digits than its factorization.

38643500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 38643500 is about 6216.3896274284. The cubic root of 38643500 is about 338.0846746998.

The spelling of 38643500 in words is "thirty-eight million, six hundred forty-three thousand, five hundred".