28538044416 has 300 divisors, whose sum is σ = 97710503072. Its totient is φ = 8153726976.

The previous prime is 28538044399. The next prime is 28538044421. The reversal of 28538044416 is 61444083582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4076863485 + ... + 4076863491.

Almost surely, 2^28538044416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28538044416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48855251536).

28538044416 is an abundant number, since it is smaller than the sum of its proper divisors (69172458656).

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

28538044416 is an frugal number, since it uses more digits than its factorization.

28538044416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 12 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The spelling of 28538044416 in words is "twenty-eight billion, five hundred thirty-eight million, forty-four thousand, four hundred sixteen".