128034815 has 16 divisors (see below), whose sum is σ = 158146560. Its totient is φ = 99459360.

The previous prime is 128034799. The next prime is 128034821. The reversal of 128034815 is 518430821.

It is not a de Polignac number, because 128034815 - 2⁴ = 128034799 is a prime.

It is a super-3 number, since 3×128034815³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28706 + ... + 32864.

It is an arithmetic number, because the mean of its divisors is an integer number (9884160).

Almost surely, 2^128034815 is an apocalyptic number.

128034815 is a deficient number, since it is larger than the sum of its proper divisors (30111745).

128034815 is a wasteful number, since it uses less digits than its factorization.

128034815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4342.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 128034815 is about 11315.2470145375. The cubic root of 128034815 is about 504.0141076403.

The spelling of 128034815 in words is "one hundred twenty-eight million, thirty-four thousand, eight hundred fifteen".