28060813504 has 56 divisors (see below), whose sum is σ = 57033698480. Its totient is φ = 13693971456.

The previous prime is 28060813493. The next prime is 28060813519. The reversal of 28060813504 is 40531806082.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437374 + ... + 497410.

Almost surely, 2^28060813504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28060813504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28516849240).

28060813504 is an abundant number, since it is smaller than the sum of its proper divisors (28972884976).

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

28060813504 is a wasteful number, since it uses less digits than its factorization.

28060813504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60225 (or 60215 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 28060813504 in words is "twenty-eight billion, sixty million, eight hundred thirteen thousand, five hundred four".