28620544224 has 48 divisors (see below), whose sum is σ = 78395409792. Its totient is φ = 9125390208.

The previous prime is 28620544223. The next prime is 28620544321. The reversal of 28620544224 is 42244502682.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28620544223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6478894 + ... + 6483309.

It is an arithmetic number, because the mean of its divisors is an integer number (1633237704).

Almost surely, 2^28620544224 is an apocalyptic number.

28620544224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28620544224 is an abundant number, since it is smaller than the sum of its proper divisors (49774865568).

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

28620544224 is a wasteful number, since it uses less digits than its factorization.

28620544224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12962239 (or 12962231 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 39.

The spelling of 28620544224 in words is "twenty-eight billion, six hundred twenty million, five hundred forty-four thousand, two hundred twenty-four".