91803460 has 72 divisors (see below), whose sum is σ = 226520280. Its totient is φ = 31159296.

The previous prime is 91803457. The next prime is 91803461. The reversal of 91803460 is 6430819.

It can be written as a sum of positive squares in 4 ways, for example, as 103684 + 91699776 = 322^2 + 9576^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91803461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110326 + ... + 111154.

It is an arithmetic number, because the mean of its divisors is an integer number (3146115).

Almost surely, 2^91803460 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 91803460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113260140).

91803460 is an abundant number, since it is smaller than the sum of its proper divisors (134716820).

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

91803460 is a wasteful number, since it uses less digits than its factorization.

91803460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 91803460 is about 9581.4122132387. The cubic root of 91803460 is about 451.1140463102.

The spelling of 91803460 in words is "ninety-one million, eight hundred three thousand, four hundred sixty".