91796328 has 160 divisors (see below), whose sum is σ = 293637960. Its totient is φ = 26542080.

The previous prime is 91796323. The next prime is 91796333. The reversal of 91796328 is 82369719.

91796328 is a `hidden beast` number, since 9 + 1 + 7 + 9 + 632 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (91796323) and next prime (91796333).

It can be written as a sum of positive squares in 4 ways, for example, as 87946884 + 3849444 = 9378^2 + 1962^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91796321) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 142888 + ... + 143528.

Almost surely, 2^91796328 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 91796328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146818980).

91796328 is an abundant number, since it is smaller than the sum of its proper divisors (201841632).

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

91796328 is a wasteful number, since it uses less digits than its factorization.

91796328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689 (or 676 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 91796328 is about 9581.0400270534. The cubic root of 91796328 is about 451.1023640029.

The spelling of 91796328 in words is "ninety-one million, seven hundred ninety-six thousand, three hundred twenty-eight".