28060515840 has 320 divisors, whose sum is σ = 105299403264. Its totient is φ = 6240043008.

The previous prime is 28060515811. The next prime is 28060515851. The reversal of 28060515840 is 4851506082.

It is a tau number, because it is divible by the number of its divisors (320).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 1982067 + ... + 1996173.

Almost surely, 2^28060515840 is an apocalyptic number.

28060515840 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 28060515840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52649701632).

28060515840 is an abundant number, since it is smaller than the sum of its proper divisors (77238887424).

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

28060515840 is a wasteful number, since it uses less digits than its factorization.

28060515840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14177 (or 14161 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 39.

The spelling of 28060515840 in words is "twenty-eight billion, sixty million, five hundred fifteen thousand, eight hundred forty".