91369320 has 192 divisors, whose sum is σ = 327499200. Its totient is φ = 20321280.

The previous prime is 91369303. The next prime is 91369321. The reversal of 91369320 is 2396319.

It is not an unprimeable number, because it can be changed into a prime (91369321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 240891 + ... + 241269.

It is an arithmetic number, because the mean of its divisors is an integer number (1705725).

Almost surely, 2^91369320 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 91369320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163749600).

91369320 is an abundant number, since it is smaller than the sum of its proper divisors (236129880).

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

91369320 is a wasteful number, since it uses less digits than its factorization.

91369320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 91369320 is about 9558.7300411718. The cubic root of 91369320 is about 450.4018139451.

The spelling of 91369320 in words is "ninety-one million, three hundred sixty-nine thousand, three hundred twenty".