28608078506 has 16 divisors (see below), whose sum is σ = 49095807360. Its totient is φ = 12247258320.

The previous prime is 28608078491. The next prime is 28608078509. The reversal of 28608078506 is 60587080682.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28608078509) 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, 1098905 + ... + 1124636.

It is an arithmetic number, because the mean of its divisors is an integer number (3068487960).

Almost surely, 2^28608078506 is an apocalyptic number.

28608078506 is a deficient number, since it is larger than the sum of its proper divisors (20487728854).

28608078506 is a wasteful number, since it uses less digits than its factorization.

28608078506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224469.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 28608078506 in words is "twenty-eight billion, six hundred eight million, seventy-eight thousand, five hundred six".