128893005 has 16 divisors (see below), whose sum is σ = 229143360. Its totient is φ = 68742864.

The previous prime is 128892991. The next prime is 128893007. The reversal of 128893005 is 500398821.

It is not a de Polignac number, because 128893005 - 2⁷ = 128892877 is a prime.

It is a super-2 number, since 2×128893005² = 33226813475860050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128893007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477247 + ... + 477516.

It is an arithmetic number, because the mean of its divisors is an integer number (14321460).

Almost surely, 2^128893005 is an apocalyptic number.

128893005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128893005 is a deficient number, since it is larger than the sum of its proper divisors (100250355).

128893005 is an equidigital number, since it uses as much as digits as its factorization.

128893005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954777 (or 954771 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 128893005 is about 11353.1055222789. The cubic root of 128893005 is about 505.1377005794.

The spelling of 128893005 in words is "one hundred twenty-eight million, eight hundred ninety-three thousand, five".