128460487 has 2 divisors, whose sum is σ = 128460488. Its totient is φ = 128460486.

The previous prime is 128460473. The next prime is 128460569. The reversal of 128460487 is 784064821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128460487 - 2¹¹ = 128458439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128460407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64230243 + 64230244.

It is an arithmetic number, because the mean of its divisors is an integer number (64230244).

Almost surely, 2^128460487 is an apocalyptic number.

128460487 is a deficient number, since it is larger than the sum of its proper divisors (1).

128460487 is an equidigital number, since it uses as much as digits as its factorization.

128460487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 128460487 is about 11334.0410710390. The cubic root of 128460487 is about 504.5720479912.

The spelling of 128460487 in words is "one hundred twenty-eight million, four hundred sixty thousand, four hundred eighty-seven".