91098336 has 96 divisors (see below), whose sum is σ = 282175488. Its totient is φ = 25182720.

The previous prime is 91098323. The next prime is 91098341. The reversal of 91098336 is 63389019.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 91098294 and 91098303.

It is a congruent number.

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, 18646 + ... + 23018.

It is an arithmetic number, because the mean of its divisors is an integer number (2939328).

Almost surely, 2^91098336 is an apocalyptic number.

91098336 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91098336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141087744).

91098336 is an abundant number, since it is smaller than the sum of its proper divisors (191077152).

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

91098336 is a wasteful number, since it uses less digits than its factorization.

91098336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4424 (or 4416 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 91098336 is about 9544.5448293777. The cubic root of 91098336 is about 449.9561043603.

The spelling of 91098336 in words is "ninety-one million, ninety-eight thousand, three hundred thirty-six".