128306000 has 40 divisors (see below), whose sum is σ = 310248744. Its totient is φ = 51321600.

The previous prime is 128305999. The next prime is 128306027. The reversal of 128306000 is 603821.

It can be written as a sum of positive squares in 4 ways, for example, as 2238016 + 126067984 = 1496^2 + 11228^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30077 + ... + 34076.

Almost surely, 2^128306000 is an apocalyptic number.

128306000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128306000 is an abundant number, since it is smaller than the sum of its proper divisors (181942744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128306000 is an equidigital number, since it uses as much as digits as its factorization.

128306000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64176 (or 64160 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 128306000 is about 11327.2238434667. The cubic root of 128306000 is about 504.3697001921.

Adding to 128306000 its reverse (603821), we get a palindrome (128909821).

The spelling of 128306000 in words is "one hundred twenty-eight million, three hundred six thousand".