128300929 has 9 divisors (see below), whose sum is σ = 131635011. Its totient is φ = 125050080.

The previous prime is 128300903. The next prime is 128300933. The reversal of 128300929 is 929003821.

The square root of 128300929 is 11327.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 96491329 + 31809600 = 9823^2 + 5640^2 .

It is not a de Polignac number, because 128300929 - 2⁵ = 128300897 is a prime.

It is a super-2 number, since 2×128300929² = 32922256764526082, 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 = 128300894 and 128300903.

It is not an unprimeable number, because it can be changed into a prime (128300999) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 532249 + ... + 532489.

Almost surely, 2^128300929 is an apocalyptic number.

128300929 is the 11327-th square number.

128300929 is the 5664-th centered octagonal number.

It is an amenable number.

128300929 is a deficient number, since it is larger than the sum of its proper divisors (3334082).

128300929 is an frugal number, since it uses more digits than its factorization.

128300929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The cubic root of 128300929 is about 504.3630554198.

The spelling of 128300929 in words is "one hundred twenty-eight million, three hundred thousand, nine hundred twenty-nine".