38643792 has 40 divisors (see below), whose sum is σ = 108906720. Its totient is φ = 11710080.

The previous prime is 38643779. The next prime is 38643793. The reversal of 38643792 is 29734683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38643793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36067 + ... + 37122.

It is an arithmetic number, because the mean of its divisors is an integer number (2722668).

Almost surely, 2^38643792 is an apocalyptic number.

It is an amenable number.

38643792 is an abundant number, since it is smaller than the sum of its proper divisors (70262928).

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

38643792 is a wasteful number, since it uses less digits than its factorization.

38643792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73211 (or 73205 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 38643792 is about 6216.4131136854. The cubic root of 38643792 is about 338.0855262486.

The spelling of 38643792 in words is "thirty-eight million, six hundred forty-three thousand, seven hundred ninety-two".