128000799 has 12 divisors (see below), whose sum is σ = 185297112. Its totient is φ = 85146000.

The previous prime is 128000749. The next prime is 128000813. The reversal of 128000799 is 997000821.

It is a happy number.

It is not a de Polignac number, because 128000799 - 2¹⁷ = 127869727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128000749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11277 + ... + 19574.

It is an arithmetic number, because the mean of its divisors is an integer number (15441426).

Almost surely, 2^128000799 is an apocalyptic number.

128000799 is a deficient number, since it is larger than the sum of its proper divisors (57296313).

128000799 is a wasteful number, since it uses less digits than its factorization.

128000799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31318 (or 31315 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 128000799 is about 11313.7438100745. The cubic root of 128000799 is about 503.9694685776.

The spelling of 128000799 in words is "one hundred twenty-eight million, seven hundred ninety-nine", and thus it is an aban number.