28536467578 has 16 divisors (see below), whose sum is σ = 43541789760. Its totient is φ = 14022666496.

The previous prime is 28536467569. The next prime is 28536467581. The reversal of 28536467578 is 87576463582.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442650 + ... + 503002.

It is an arithmetic number, because the mean of its divisors is an integer number (2721361860).

Almost surely, 2^28536467578 is an apocalyptic number.

28536467578 is a deficient number, since it is larger than the sum of its proper divisors (15005322182).

28536467578 is a wasteful number, since it uses less digits than its factorization.

28536467578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64421.

The product of its digits is 67737600, while the sum is 61.

The spelling of 28536467578 in words is "twenty-eight billion, five hundred thirty-six million, four hundred sixty-seven thousand, five hundred seventy-eight".