28544507530 has 48 divisors (see below), whose sum is σ = 65202234336. Its totient is φ = 8896987680.

The previous prime is 28544507513. The next prime is 28544507561. The reversal of 28544507530 is 3570544582.

It is a super-3 number, since 3×28544507530³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2642524 + ... + 2653303.

It is an arithmetic number, because the mean of its divisors is an integer number (1358379882).

Almost surely, 2^28544507530 is an apocalyptic number.

28544507530 is an abundant number, since it is smaller than the sum of its proper divisors (36657726806).

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

28544507530 is a wasteful number, since it uses less digits than its factorization.

28544507530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5295859 (or 5295852 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 43.

The spelling of 28544507530 in words is "twenty-eight billion, five hundred forty-four million, five hundred seven thousand, five hundred thirty".