280480004728 has 288 divisors, whose sum is σ = 718877980800. Its totient is φ = 100142697600.

The previous prime is 280480004713. The next prime is 280480004767. The reversal of 280480004728 is 827400084082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 123721851 + ... + 123724117.

It is an arithmetic number, because the mean of its divisors is an integer number (2496104100).

Almost surely, 2^280480004728 is an apocalyptic number.

280480004728 is a gapful number since it is divisible by the number (28) 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 280480004728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359438990400).

280480004728 is an abundant number, since it is smaller than the sum of its proper divisors (438397976072).

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

280480004728 is a wasteful number, since it uses less digits than its factorization.

280480004728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2383 (or 2337 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 43.

The spelling of 280480004728 in words is "two hundred eighty billion, four hundred eighty million, four thousand, seven hundred twenty-eight".