38727881 has 2 divisors, whose sum is σ = 38727882. Its totient is φ = 38727880.

The previous prime is 38727877. The next prime is 38727919. The reversal of 38727881 is 18872783.

38727881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36711481 + 2016400 = 6059^2 + 1420^2 .

It is a cyclic number.

It is not a de Polignac number, because 38727881 - 2² = 38727877 is a prime.

It is a super-2 number, since 2×38727881² = 2999697533500322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38727841) 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, 19363940 + 19363941.

It is an arithmetic number, because the mean of its divisors is an integer number (19363941).

Almost surely, 2^38727881 is an apocalyptic number.

It is an amenable number.

38727881 is a deficient number, since it is larger than the sum of its proper divisors (1).

38727881 is an equidigital number, since it uses as much as digits as its factorization.

38727881 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 38727881 is about 6223.1729045560. The cubic root of 38727881 is about 338.3305736116.

The spelling of 38727881 in words is "thirty-eight million, seven hundred twenty-seven thousand, eight hundred eighty-one".