28870838784 has 120 divisors (see below), whose sum is σ = 83761996032. Its totient is φ = 9572935680.

The previous prime is 28870838767. The next prime is 28870838791. The reversal of 28870838784 is 48783807882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 863727 + ... + 896529.

Almost surely, 2^28870838784 is an apocalyptic number.

28870838784 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 28870838784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41880998016).

28870838784 is an abundant number, since it is smaller than the sum of its proper divisors (54891157248).

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

28870838784 is a wasteful number, since it uses less digits than its factorization.

28870838784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33018 (or 32999 counting only the distinct ones).

The product of its (nonzero) digits is 38535168, while the sum is 63.

The spelling of 28870838784 in words is "twenty-eight billion, eight hundred seventy million, eight hundred thirty-eight thousand, seven hundred eighty-four".