28944299480 has 64 divisors (see below), whose sum is σ = 67918798080. Its totient is φ = 11088691200.

The previous prime is 28944299471. The next prime is 28944299491. The reversal of 28944299480 is 8499244982.

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, 41 + ... + 240600.

It is an arithmetic number, because the mean of its divisors is an integer number (1061231220).

Almost surely, 2^28944299480 is an apocalyptic number.

28944299480 is a gapful number since it is divisible by the number (20) 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 28944299480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33959399040).

28944299480 is an abundant number, since it is smaller than the sum of its proper divisors (38974498600).

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

28944299480 is a wasteful number, since it uses less digits than its factorization.

28944299480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240780 (or 240776 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 59.

The spelling of 28944299480 in words is "twenty-eight billion, nine hundred forty-four million, two hundred ninety-nine thousand, four hundred eighty".