38128087 has 2 divisors, whose sum is σ = 38128088. Its totient is φ = 38128086.

The previous prime is 38128063. The next prime is 38128099. The reversal of 38128087 is 78082183.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38128087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38128037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19064043 + 19064044.

It is an arithmetic number, because the mean of its divisors is an integer number (19064044).

Almost surely, 2^38128087 is an apocalyptic number.

38128087 is a deficient number, since it is larger than the sum of its proper divisors (1).

38128087 is an equidigital number, since it uses as much as digits as its factorization.

38128087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 38128087 is about 6174.7944905074. The cubic root of 38128087 is about 336.5748585835.

The spelling of 38128087 in words is "thirty-eight million, one hundred twenty-eight thousand, eighty-seven".