89928778528 has 12 divisors (see below), whose sum is σ = 177047282790. Its totient is φ = 44964389248.

The previous prime is 89928778451. The next prime is 89928778543. The reversal of 89928778528 is 82587782998.

It can be written as a sum of positive squares in only one way, i.e., 70770896784 + 19157881744 = 266028^2 + 138412^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1405137133 + ... + 1405137196.

Almost surely, 2^89928778528 is an apocalyptic number.

It is an amenable number.

89928778528 is a deficient number, since it is larger than the sum of its proper divisors (87118504262).

89928778528 is a wasteful number, since it uses less digits than its factorization.

89928778528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810274339 (or 2810274331 counting only the distinct ones).

The product of its digits is 325140480, while the sum is 73.

The spelling of 89928778528 in words is "eighty-nine billion, nine hundred twenty-eight million, seven hundred seventy-eight thousand, five hundred twenty-eight".