28521350330 has 128 divisors (see below), whose sum is σ = 62030831616. Its totient is φ = 9313920000.

The previous prime is 28521350311. The next prime is 28521350339. The reversal of 28521350330 is 3305312582.

28521350330 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×28521350330² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28521350339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32300069 + ... + 32300951.

It is an arithmetic number, because the mean of its divisors is an integer number (484615872).

Almost surely, 2^28521350330 is an apocalyptic number.

28521350330 is an abundant number, since it is smaller than the sum of its proper divisors (33509481286).

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

28521350330 is a wasteful number, since it uses less digits than its factorization.

28521350330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692.

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 28521350330 in words is "twenty-eight billion, five hundred twenty-one million, three hundred fifty thousand, three hundred thirty".