128067813 has 12 divisors (see below), whose sum is σ = 185593408. Its totient is φ = 85098600.

The previous prime is 128067811. The next prime is 128067829. The reversal of 128067813 is 318760821.

It is not a de Polignac number, because 128067813 - 2¹ = 128067811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128067811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20413 + ... + 25938.

Almost surely, 2^128067813 is an apocalyptic number.

It is an amenable number.

128067813 is a deficient number, since it is larger than the sum of its proper divisors (57525595).

128067813 is a wasteful number, since it uses less digits than its factorization.

128067813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46664 (or 46661 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 128067813 is about 11316.7050416630. The cubic root of 128067813 is about 504.0574032313.

The spelling of 128067813 in words is "one hundred twenty-eight million, sixty-seven thousand, eight hundred thirteen".