91371140 has 24 divisors (see below), whose sum is σ = 219291072. Its totient is φ = 31327200.

The previous prime is 91371109. The next prime is 91371151. The reversal of 91371140 is 4117319.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326186 + ... + 326465.

It is an arithmetic number, because the mean of its divisors is an integer number (9137128).

Almost surely, 2^91371140 is an apocalyptic number.

It is an amenable number.

91371140 is an abundant number, since it is smaller than the sum of its proper divisors (127919932).

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

91371140 is a wasteful number, since it uses less digits than its factorization.

91371140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652667 (or 652665 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 91371140 is about 9558.8252416288. The cubic root of 91371140 is about 450.4048044670.

Adding to 91371140 its reverse (4117319), we get a palindrome (95488459).

The spelling of 91371140 in words is "ninety-one million, three hundred seventy-one thousand, one hundred forty".