28237020530 has 32 divisors (see below), whose sum is σ = 52594721280. Its totient is φ = 10903685760.

The previous prime is 28237020523. The next prime is 28237020533. The reversal of 28237020530 is 3502073282.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28237020533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15437 + ... + 238143.

It is an arithmetic number, because the mean of its divisors is an integer number (1643585040).

Almost surely, 2^28237020530 is an apocalyptic number.

28237020530 is a deficient number, since it is larger than the sum of its proper divisors (24357700750).

28237020530 is a wasteful number, since it uses less digits than its factorization.

28237020530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223154.

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 28237020530 in words is "twenty-eight billion, two hundred thirty-seven million, twenty thousand, five hundred thirty".