128486568 has 64 divisors (see below), whose sum is σ = 378961920. Its totient is φ = 35524800.

The previous prime is 128486549. The next prime is 128486591. The reversal of 128486568 is 865684821.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7128 + ... + 17543.

It is an arithmetic number, because the mean of its divisors is an integer number (5921280).

Almost surely, 2^128486568 is an apocalyptic number.

It is an amenable number.

128486568 is an abundant number, since it is smaller than the sum of its proper divisors (250475352).

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

128486568 is a wasteful number, since it uses less digits than its factorization.

128486568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24718 (or 24714 counting only the distinct ones).

The product of its digits is 737280, while the sum is 48.

The square root of 128486568 is about 11335.1915731495. The cubic root of 128486568 is about 504.6061929992.

The spelling of 128486568 in words is "one hundred twenty-eight million, four hundred eighty-six thousand, five hundred sixty-eight".