28058222544 has 80 divisors (see below), whose sum is σ = 79139649024. Its totient is φ = 8495344000.

The previous prime is 28058222473. The next prime is 28058222551. The reversal of 28058222544 is 44522285082.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28058222496 and 28058222505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624019 + ... + 667469.

Almost surely, 2^28058222544 is an apocalyptic number.

28058222544 is a gapful number since it is divisible by the number (24) 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 28058222544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39569824512).

28058222544 is an abundant number, since it is smaller than the sum of its proper divisors (51081426480).

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

28058222544 is a wasteful number, since it uses less digits than its factorization.

28058222544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44696 (or 44690 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 42.

The spelling of 28058222544 in words is "twenty-eight billion, fifty-eight million, two hundred twenty-two thousand, five hundred forty-four".