28779050586 has 64 divisors (see below), whose sum is σ = 69448369536. Its totient is φ = 7832505600.

The previous prime is 28779050557. The next prime is 28779050603. The reversal of 28779050586 is 68505097782.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 421525 + ... + 485016.

It is an arithmetic number, because the mean of its divisors is an integer number (1085130774).

Almost surely, 2^28779050586 is an apocalyptic number.

28779050586 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28779050586 is an abundant number, since it is smaller than the sum of its proper divisors (40669318950).

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

28779050586 is a wasteful number, since it uses less digits than its factorization.

28779050586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906607.

The product of its (nonzero) digits is 8467200, while the sum is 57.

The spelling of 28779050586 in words is "twenty-eight billion, seven hundred seventy-nine million, fifty thousand, five hundred eighty-six".