38231728 has 10 divisors (see below), whose sum is σ = 74074004. Its totient is φ = 19115856.

The previous prime is 38231707. The next prime is 38231729. The reversal of 38231728 is 82713283.

38231728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 38231693 and 38231702.

It is not an unprimeable number, because it can be changed into a prime (38231729) by changing a digit.

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 as a sum of consecutive naturals, namely, 1194726 + ... + 1194757.

Almost surely, 2^38231728 is an apocalyptic number.

It is an amenable number.

38231728 is a deficient number, since it is larger than the sum of its proper divisors (35842276).

38231728 is a wasteful number, since it uses less digits than its factorization.

38231728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389491 (or 2389485 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 38231728 is about 6183.1810583226. The cubic root of 38231728 is about 336.8795455711.

The spelling of 38231728 in words is "thirty-eight million, two hundred thirty-one thousand, seven hundred twenty-eight".