128523030 has 32 divisors (see below), whose sum is σ = 324691200. Its totient is φ = 32468832.

The previous prime is 128523029. The next prime is 128523037. The reversal of 128523030 is 30325821.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128523037) 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, 112170 + ... + 113309.

It is an arithmetic number, because the mean of its divisors is an integer number (10146600).

Almost surely, 2^128523030 is an apocalyptic number.

128523030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128523030 is an abundant number, since it is smaller than the sum of its proper divisors (196168170).

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

128523030 is a wasteful number, since it uses less digits than its factorization.

128523030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225508.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 128523030 is about 11336.7998129984. The cubic root of 128523030 is about 504.6539209736.

Adding to 128523030 its reverse (30325821), we get a palindrome (158848851).

The spelling of 128523030 in words is "one hundred twenty-eight million, five hundred twenty-three thousand, thirty".