128280486 has 8 divisors (see below), whose sum is σ = 256560984. Its totient is φ = 42760160.

The previous prime is 128280479. The next prime is 128280497. The reversal of 128280486 is 684082821.

It is a sphenic number, since it is the product of 3 distinct primes.

128280486 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10690035 + ... + 10690046.

It is an arithmetic number, because the mean of its divisors is an integer number (32070123).

Almost surely, 2^128280486 is an apocalyptic number.

128280486 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128280486 is a wasteful number, since it uses less digits than its factorization.

128280486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21380086.

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 128280486 is about 11326.0975627089. The cubic root of 128280486 is about 504.3362662098.

The spelling of 128280486 in words is "one hundred twenty-eight million, two hundred eighty thousand, four hundred eighty-six".