38643850 has 36 divisors (see below), whose sum is σ = 83617974. Its totient is φ = 13248480.

The previous prime is 38643827. The next prime is 38643851. The reversal of 38643850 is 5834683.

It can be written as a sum of positive squares in 3 ways, for example, as 30041361 + 8602489 = 5481^2 + 2933^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (38643851) 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 17 ways as a sum of consecutive naturals, for example, 5437 + ... + 10336.

Almost surely, 2^38643850 is an apocalyptic number.

38643850 is an abundant number, since it is smaller than the sum of its proper divisors (44974124).

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

38643850 is a wasteful number, since it uses less digits than its factorization.

38643850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15799 (or 15787 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 38643850 is about 6216.4177787533. The cubic root of 38643850 is about 338.0856953913.

It can be divided in two parts, 38643 and 850, that added together give a palindrome (39493).

The spelling of 38643850 in words is "thirty-eight million, six hundred forty-three thousand, eight hundred fifty".