38728871 has 2 divisors, whose sum is σ = 38728872. Its totient is φ = 38728870.

The previous prime is 38728831. The next prime is 38728883. The reversal of 38728871 is 17882783.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38728871 - 2²² = 34534567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38728831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19364435 + 19364436.

It is an arithmetic number, because the mean of its divisors is an integer number (19364436).

Almost surely, 2^38728871 is an apocalyptic number.

38728871 is a deficient number, since it is larger than the sum of its proper divisors (1).

38728871 is an equidigital number, since it uses as much as digits as its factorization.

38728871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150528, while the sum is 44.

The square root of 38728871 is about 6223.2524454661. The cubic root of 38728871 is about 338.3334564995. Note that the first 3 decimals are identical.

The spelling of 38728871 in words is "thirty-eight million, seven hundred twenty-eight thousand, eight hundred seventy-one".