38640875 has 64 divisors (see below), whose sum is σ = 61501440. Its totient is φ = 23587200.

The previous prime is 38640857. The next prime is 38640907. The reversal of 38640875 is 57804683.

It is a happy number.

It is not a de Polignac number, because 38640875 - 2⁸ = 38640619 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 489086 + ... + 489164.

It is an arithmetic number, because the mean of its divisors is an integer number (960960).

Almost surely, 2^38640875 is an apocalyptic number.

38640875 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

38640875 is a deficient number, since it is larger than the sum of its proper divisors (22860565).

38640875 is a wasteful number, since it uses less digits than its factorization.

38640875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 38640875 is about 6216.1784884284. The cubic root of 38640875 is about 338.0770193169.

The spelling of 38640875 in words is "thirty-eight million, six hundred forty thousand, eight hundred seventy-five".