28989492608 has 32 divisors (see below), whose sum is σ = 57793452960. Its totient is φ = 14484469248.

The previous prime is 28989492593. The next prime is 28989492617. The reversal of 28989492608 is 80629498982.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102566 + ... + 261722.

It is an arithmetic number, because the mean of its divisors is an integer number (1806045405).

Almost surely, 2^28989492608 is an apocalyptic number.

It is an amenable number.

28989492608 is a deficient number, since it is larger than the sum of its proper divisors (28803960352).

28989492608 is a wasteful number, since it uses less digits than its factorization.

28989492608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160594 (or 160582 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 65.

The spelling of 28989492608 in words is "twenty-eight billion, nine hundred eighty-nine million, four hundred ninety-two thousand, six hundred eight".