91027000 has 64 divisors (see below), whose sum is σ = 214475040. Its totient is φ = 36160000.

The previous prime is 91026997. The next prime is 91027007. The reversal of 91027000 is 72019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91027007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226800 + ... + 227200.

Almost surely, 2^91027000 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 91027000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107237520).

91027000 is an abundant number, since it is smaller than the sum of its proper divisors (123448040).

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

91027000 is a wasteful number, since it uses less digits than its factorization.

91027000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 91027000 is about 9540.8070937421. The cubic root of 91027000 is about 449.8386252638.

Adding to 91027000 its reverse (72019), we get a palindrome (91099019).

The spelling of 91027000 in words is "ninety-one million, twenty-seven thousand".