28520900418 has 32 divisors (see below), whose sum is σ = 60866539200. Its totient is φ = 8883219456.

The previous prime is 28520900417. The next prime is 28520900431. The reversal of 28520900418 is 81400902582.

It is not an unprimeable number, because it can be changed into a prime (28520900417) 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, 1705263 + ... + 1721906.

It is an arithmetic number, because the mean of its divisors is an integer number (1902079350).

Almost surely, 2^28520900418 is an apocalyptic number.

28520900418 is an abundant number, since it is smaller than the sum of its proper divisors (32345638782).

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

28520900418 is a wasteful number, since it uses less digits than its factorization.

28520900418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3427266.

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 28520900418 in words is "twenty-eight billion, five hundred twenty million, nine hundred thousand, four hundred eighteen".