38428081 has 2 divisors, whose sum is σ = 38428082. Its totient is φ = 38428080.

The previous prime is 38428073. The next prime is 38428097. The reversal of 38428081 is 18082483.

38428081 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., 36966400 + 1461681 = 6080^2 + 1209^2 .

It is a cyclic number.

It is not a de Polignac number, because 38428081 - 2³ = 38428073 is a prime.

It is a super-2 number, since 2×38428081² = 2953434818685122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38428031) 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, 19214040 + 19214041.

It is an arithmetic number, because the mean of its divisors is an integer number (19214041).

Almost surely, 2^38428081 is an apocalyptic number.

It is an amenable number.

38428081 is a deficient number, since it is larger than the sum of its proper divisors (1).

38428081 is an equidigital number, since it uses as much as digits as its factorization.

38428081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 38428081 is about 6199.0387158010. The cubic root of 38428081 is about 337.4552836962.

The spelling of 38428081 in words is "thirty-eight million, four hundred twenty-eight thousand, eighty-one".