28871049216 has 120 divisors (see below), whose sum is σ = 78080877504. Its totient is φ = 9486991360.

The previous prime is 28871049113. The next prime is 28871049283. The reversal of 28871049216 is 61294017882.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3485656 + ... + 3493928.

Almost surely, 2^28871049216 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 28871049216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39040438752).

28871049216 is an abundant number, since it is smaller than the sum of its proper divisors (49209828288).

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

28871049216 is an frugal number, since it uses more digits than its factorization.

28871049216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8375 (or 8349 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The spelling of 28871049216 in words is "twenty-eight billion, eight hundred seventy-one million, forty-nine thousand, two hundred sixteen".