90732668928 has 432 divisors, whose sum is σ = 276901148160. Its totient is φ = 26398310400.

The previous prime is 90732668911. The next prime is 90732668981. The reversal of 90732668928 is 82986623709.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 714430401 + ... + 714430527.

It is an arithmetic number, because the mean of its divisors is an integer number (640974880).

Almost surely, 2^90732668928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90732668928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138450574080).

90732668928 is an abundant number, since it is smaller than the sum of its proper divisors (186168479232).

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

90732668928 is a wasteful number, since it uses less digits than its factorization.

90732668928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 60.

The spelling of 90732668928 in words is "ninety billion, seven hundred thirty-two million, six hundred sixty-eight thousand, nine hundred twenty-eight".