28004849324280 has 512 divisors, whose sum is σ = 98935547904000. Its totient is φ = 7026522370560.

The previous prime is 28004849324233. The next prime is 28004849324303. The reversal of 28004849324280 is 8242394840082.

28004849324280 is a `hidden beast` number, since 2 + 80 + 0 + 484 + 9 + 3 + 2 + 4 + 2 + 80 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7729738549 + ... + 7729742171.

It is an arithmetic number, because the mean of its divisors is an integer number (193233492000).

Almost surely, 2^{28004849324280} is an apocalyptic number.

28004849324280 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 28004849324280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49467773952000).

28004849324280 is an abundant number, since it is smaller than the sum of its proper divisors (70930698579720).

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

28004849324280 is a wasteful number, since it uses less digits than its factorization.

28004849324280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6136 (or 6126 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 54.

The spelling of 28004849324280 in words is "twenty-eight trillion, four billion, eight hundred forty-nine million, three hundred twenty-four thousand, two hundred eighty".