28819082880 has 512 divisors, whose sum is σ = 118003392000. Its totient is φ = 6510772224.

The previous prime is 28819082879. The next prime is 28819082881. The reversal of 28819082880 is 8828091882.

It is an interprime number because it is at equal distance from previous prime (28819082879) and next prime (28819082881).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (28819082881) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10764102 + ... + 10766778.

It is an arithmetic number, because the mean of its divisors is an integer number (230475375).

Almost surely, 2^28819082880 is an apocalyptic number.

28819082880 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 28819082880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59001696000).

28819082880 is an abundant number, since it is smaller than the sum of its proper divisors (89184309120).

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

28819082880 is a wasteful number, since it uses less digits than its factorization.

28819082880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801 (or 2783 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 54.

The spelling of 28819082880 in words is "twenty-eight billion, eight hundred nineteen million, eighty-two thousand, eight hundred eighty".