128403086 has 8 divisors (see below), whose sum is σ = 220119600. Its totient is φ = 55029888.

The previous prime is 128402999. The next prime is 128403133. The reversal of 128403086 is 680304821.

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

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, 4585811 + ... + 4585838.

It is an arithmetic number, because the mean of its divisors is an integer number (27514950).

Almost surely, 2^128403086 is an apocalyptic number.

128403086 is a deficient number, since it is larger than the sum of its proper divisors (91716514).

128403086 is an equidigital number, since it uses as much as digits as its factorization.

128403086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9171658.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 128403086 is about 11331.5085491738. The cubic root of 128403086 is about 504.4968828417.

The spelling of 128403086 in words is "one hundred twenty-eight million, four hundred three thousand, eighty-six".