91196028 has 144 divisors (see below), whose sum is σ = 290594304. Its totient is φ = 23425920.

The previous prime is 91196011. The next prime is 91196051. The reversal of 91196028 is 82069119.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 91195983 and 91196001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 462826 + ... + 463022.

It is an arithmetic number, because the mean of its divisors is an integer number (2018016).

Almost surely, 2^91196028 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 91196028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145297152).

91196028 is an abundant number, since it is smaller than the sum of its proper divisors (199398276).

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

91196028 is a wasteful number, since it uses less digits than its factorization.

91196028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 91196028 is about 9549.6611458208. The cubic root of 91196028 is about 450.1168881540.

The spelling of 91196028 in words is "ninety-one million, one hundred ninety-six thousand, twenty-eight".