128300927 has 4 divisors (see below), whose sum is σ = 128330256. Its totient is φ = 128271600.

The previous prime is 128300903. The next prime is 128300933. The reversal of 128300927 is 729003821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128300927 - 2¹⁸ = 128038783 is a prime.

It is a super-2 number, since 2×128300927² = 32922255738118658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128300893 and 128300902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128300527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6638 + ... + 17339.

It is an arithmetic number, because the mean of its divisors is an integer number (32082564).

Almost surely, 2^128300927 is an apocalyptic number.

128300927 is a deficient number, since it is larger than the sum of its proper divisors (29329).

128300927 is an equidigital number, since it uses as much as digits as its factorization.

128300927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29328.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 128300927 is about 11326.9999117154. Note that the first 4 decimals coincide. The cubic root of 128300927 is about 504.3630527991.

The spelling of 128300927 in words is "one hundred twenty-eight million, three hundred thousand, nine hundred twenty-seven".