128227487 has 2 divisors, whose sum is σ = 128227488. Its totient is φ = 128227486.

The previous prime is 128227483. The next prime is 128227499. The reversal of 128227487 is 784722821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128227487 - 2² = 128227483 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128227483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64113743 + 64113744.

It is an arithmetic number, because the mean of its divisors is an integer number (64113744).

Almost surely, 2^128227487 is an apocalyptic number.

128227487 is a deficient number, since it is larger than the sum of its proper divisors (1).

128227487 is an equidigital number, since it uses as much as digits as its factorization.

128227487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100352, while the sum is 41.

The square root of 128227487 is about 11323.7576360500. The cubic root of 128227487 is about 504.2668012415.

The spelling of 128227487 in words is "one hundred twenty-eight million, two hundred twenty-seven thousand, four hundred eighty-seven".