38865642 has 16 divisors (see below), whose sum is σ = 79198560. Its totient is φ = 12710672.

The previous prime is 38865641. The next prime is 38865649. The reversal of 38865642 is 24656883.

It is a junction number, because it is equal to n+sod(n) for n = 38865594 and 38865603.

It is not an unprimeable number, because it can be changed into a prime (38865641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60792 + ... + 61427.

It is an arithmetic number, because the mean of its divisors is an integer number (4949910).

Almost surely, 2^38865642 is an apocalyptic number.

38865642 is an abundant number, since it is smaller than the sum of its proper divisors (40332918).

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

38865642 is a wasteful number, since it uses less digits than its factorization.

38865642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122277.

The product of its digits is 276480, while the sum is 42.

The square root of 38865642 is about 6234.2314682726. The cubic root of 38865642 is about 338.7312634254.

The spelling of 38865642 in words is "thirty-eight million, eight hundred sixty-five thousand, six hundred forty-two".