38728556 has 6 divisors (see below), whose sum is σ = 67774980. Its totient is φ = 19364276.

The previous prime is 38728553. The next prime is 38728609. The reversal of 38728556 is 65582783.

It is not an unprimeable number, because it can be changed into a prime (38728553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4841066 + ... + 4841073.

It is an arithmetic number, because the mean of its divisors is an integer number (11295830).

Almost surely, 2^38728556 is an apocalyptic number.

It is an amenable number.

38728556 is a deficient number, since it is larger than the sum of its proper divisors (29046424).

38728556 is a wasteful number, since it uses less digits than its factorization.

38728556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9682143 (or 9682141 counting only the distinct ones).

The product of its digits is 403200, while the sum is 44.

The square root of 38728556 is about 6223.2271371050. The cubic root of 38728556 is about 338.3325392223.

The spelling of 38728556 in words is "thirty-eight million, seven hundred twenty-eight thousand, five hundred fifty-six".