91026198 has 24 divisors (see below), whose sum is σ = 197730936. Its totient is φ = 30264000.

The previous prime is 91026197. The next prime is 91026223. The reversal of 91026198 is 89162019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91026193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 913 + ... + 13523.

It is an arithmetic number, because the mean of its divisors is an integer number (8238789).

Almost surely, 2^91026198 is an apocalyptic number.

91026198 is an abundant number, since it is smaller than the sum of its proper divisors (106704738).

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

91026198 is a wasteful number, since it uses less digits than its factorization.

91026198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13020 (or 13017 counting only the distinct ones).

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

The square root of 91026198 is about 9540.7650636623. The cubic root of 91026198 is about 449.8373041480.

The spelling of 91026198 in words is "ninety-one million, twenty-six thousand, one hundred ninety-eight".