128719086 has 32 divisors (see below), whose sum is σ = 273715200. Its totient is φ = 40264224.

The previous prime is 128719069. The next prime is 128719117. The reversal of 128719086 is 680917821.

It is a congruent 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, 1486 + ... + 16113.

It is an arithmetic number, because the mean of its divisors is an integer number (8553600).

Almost surely, 2^128719086 is an apocalyptic number.

128719086 is an abundant number, since it is smaller than the sum of its proper divisors (144996114).

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

128719086 is a wasteful number, since it uses less digits than its factorization.

128719086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17680.

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 128719086 is about 11345.4434025295. The cubic root of 128719086 is about 504.9103994221.

The spelling of 128719086 in words is "one hundred twenty-eight million, seven hundred nineteen thousand, eighty-six".