38628287 has 2 divisors, whose sum is σ = 38628288. Its totient is φ = 38628286.

The previous prime is 38628281. The next prime is 38628299. The reversal of 38628287 is 78282683.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38628287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38628281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19314143 + 19314144.

It is an arithmetic number, because the mean of its divisors is an integer number (19314144).

Almost surely, 2^38628287 is an apocalyptic number.

38628287 is a deficient number, since it is larger than the sum of its proper divisors (1).

38628287 is an equidigital number, since it uses as much as digits as its factorization.

38628287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 44.

The square root of 38628287 is about 6215.1658867644. The cubic root of 38628287 is about 338.0403036565.

The spelling of 38628287 in words is "thirty-eight million, six hundred twenty-eight thousand, two hundred eighty-seven".