128528030 has 32 divisors (see below), whose sum is σ = 238902048. Its totient is φ = 49753600.

The previous prime is 128528017. The next prime is 128528039. The reversal of 128528030 is 30825821.

It is a junction number, because it is equal to n+sod(n) for n = 128527984 and 128528002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128528039) 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, 52514 + ... + 54906.

It is an arithmetic number, because the mean of its divisors is an integer number (7465689).

Almost surely, 2^128528030 is an apocalyptic number.

128528030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128528030 is a deficient number, since it is larger than the sum of its proper divisors (110374018).

128528030 is a wasteful number, since it uses less digits than its factorization.

128528030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 128528030 is about 11337.0203316392. The cubic root of 128528030 is about 504.6604651623.

The spelling of 128528030 in words is "one hundred twenty-eight million, five hundred twenty-eight thousand, thirty".