128086512 has 20 divisors (see below), whose sum is σ = 330890280. Its totient is φ = 42695488.

The previous prime is 128086507. The next prime is 128086529. The reversal of 128086512 is 215680821.

It is a super-2 number, since 2×128086512² = 32812309112652288, which contains 22 as substring.

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, 1334187 + ... + 1334282.

It is an arithmetic number, because the mean of its divisors is an integer number (16544514).

Almost surely, 2^128086512 is an apocalyptic number.

128086512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128086512 is an abundant number, since it is smaller than the sum of its proper divisors (202803768).

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

128086512 is a wasteful number, since it uses less digits than its factorization.

128086512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2668480 (or 2668474 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 128086512 is about 11317.5311795462. The cubic root of 128086512 is about 504.0819342732.

The spelling of 128086512 in words is "one hundred twenty-eight million, eighty-six thousand, five hundred twelve".