28895441900 has 72 divisors (see below), whose sum is σ = 67577903904. Its totient is φ = 10660953600.

The previous prime is 28895441881. The next prime is 28895441923. The reversal of 28895441900 is 914459882.

It is a super-2 number, since 2×28895441900² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1855145 + ... + 1870655.

Almost surely, 2^28895441900 is an apocalyptic number.

28895441900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28895441900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33788951952).

28895441900 is an abundant number, since it is smaller than the sum of its proper divisors (38682462004).

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

28895441900 is a wasteful number, since it uses less digits than its factorization.

28895441900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16971 (or 16964 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 50.

The spelling of 28895441900 in words is "twenty-eight billion, eight hundred ninety-five million, four hundred forty-one thousand, nine hundred".