28904141640 has 64 divisors (see below), whose sum is σ = 94595376960. Its totient is φ = 7007064320.

The previous prime is 28904141621. The next prime is 28904141683. The reversal of 28904141640 is 4614140982.

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 15 ways as a sum of consecutive naturals, for example, 10947219 + ... + 10949858.

It is an arithmetic number, because the mean of its divisors is an integer number (1478052765).

Almost surely, 2^28904141640 is an apocalyptic number.

28904141640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28904141640 is an abundant number, since it is smaller than the sum of its proper divisors (65691235320).

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

28904141640 is a wasteful number, since it uses less digits than its factorization.

28904141640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21897102 (or 21897098 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 28904141640 in words is "twenty-eight billion, nine hundred four million, one hundred forty-one thousand, six hundred forty".