28849844420 has 48 divisors (see below), whose sum is σ = 61149211200. Its totient is φ = 11432703360.

The previous prime is 28849844393. The next prime is 28849844423. The reversal of 28849844420 is 2444894882.

It is not an unprimeable number, because it can be changed into a prime (28849844423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1612886 + ... + 1630674.

It is an arithmetic number, because the mean of its divisors is an integer number (1273941900).

Almost surely, 2^28849844420 is an apocalyptic number.

28849844420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28849844420 is an abundant number, since it is smaller than the sum of its proper divisors (32299366780).

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

28849844420 is a wasteful number, since it uses less digits than its factorization.

28849844420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18548 (or 18546 counting only the distinct ones).

The product of its (nonzero) digits is 4718592, while the sum is 53.

The spelling of 28849844420 in words is "twenty-eight billion, eight hundred forty-nine million, eight hundred forty-four thousand, four hundred twenty".