91928282020 has 48 divisors (see below), whose sum is σ = 197875860336. Its totient is φ = 35853056000.

The previous prime is 91928282009. The next prime is 91928282053. The reversal of 91928282020 is 2028282919.

It can be written as a sum of positive squares in 8 ways, for example, as 399040576 + 91529241444 = 19976^2 + 302538^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1378650 + ... + 1443790.

It is an arithmetic number, because the mean of its divisors is an integer number (4122413757).

Almost surely, 2^91928282020 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 91928282020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98937930168).

91928282020 is an abundant number, since it is smaller than the sum of its proper divisors (105947578316).

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

91928282020 is a wasteful number, since it uses less digits than its factorization.

91928282020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66912 (or 66910 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 91928282020 in words is "ninety-one billion, nine hundred twenty-eight million, two hundred eighty-two thousand, twenty".