128089615 has 8 divisors (see below), whose sum is σ = 153770688. Its totient is φ = 102429600.

The previous prime is 128089603. The next prime is 128089673. The reversal of 128089615 is 516980821.

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

It is not a de Polignac number, because 128089615 - 2⁷ = 128089487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15765 + ... + 22465.

It is an arithmetic number, because the mean of its divisors is an integer number (19221336).

Almost surely, 2^128089615 is an apocalyptic number.

128089615 is a deficient number, since it is larger than the sum of its proper divisors (25681073).

128089615 is an equidigital number, since it uses as much as digits as its factorization.

128089615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10529.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 128089615 is about 11317.6682669179. The cubic root of 128089615 is about 504.0860048387.

The spelling of 128089615 in words is "one hundred twenty-eight million, eighty-nine thousand, six hundred fifteen".