28778058760 has 32 divisors (see below), whose sum is σ = 70637054400. Its totient is φ = 10464748480.

The previous prime is 28778058733. The next prime is 28778058763. The reversal of 28778058760 is 6785087782.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28778058695 and 28778058704.

It is not an unprimeable number, because it can be changed into a prime (28778058763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32701900 + ... + 32702779.

It is an arithmetic number, because the mean of its divisors is an integer number (2207407950).

Almost surely, 2^28778058760 is an apocalyptic number.

28778058760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28778058760 is an abundant number, since it is smaller than the sum of its proper divisors (41858995640).

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

28778058760 is a wasteful number, since it uses less digits than its factorization.

28778058760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65404701 (or 65404697 counting only the distinct ones).

The product of its (nonzero) digits is 10536960, while the sum is 58.

The spelling of 28778058760 in words is "twenty-eight billion, seven hundred seventy-eight million, fifty-eight thousand, seven hundred sixty".