38320728 has 16 divisors (see below), whose sum is σ = 95801880. Its totient is φ = 12773568.

The previous prime is 38320727. The next prime is 38320757. The reversal of 38320728 is 82702383.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38320721) 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 3 ways as a sum of consecutive naturals, for example, 798325 + ... + 798372.

Almost surely, 2^38320728 is an apocalyptic number.

It is an amenable number.

38320728 is an abundant number, since it is smaller than the sum of its proper divisors (57481152).

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

38320728 is a wasteful number, since it uses less digits than its factorization.

38320728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596706 (or 1596702 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 38320728 is about 6190.3738174685. The cubic root of 38320728 is about 337.1407513446.

The spelling of 38320728 in words is "thirty-eight million, three hundred twenty thousand, seven hundred twenty-eight".