91040760 has 80 divisors (see below), whose sum is σ = 306009000. Its totient is φ = 24276672.

The previous prime is 91040753. The next prime is 91040771. The reversal of 91040760 is 6704019.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10810 + ... + 17289.

Almost surely, 2^91040760 is an apocalyptic number.

91040760 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

91040760 is an abundant number, since it is smaller than the sum of its proper divisors (214968240).

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

91040760 is a wasteful number, since it uses less digits than its factorization.

91040760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28122 (or 28109 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 91040760 is about 9541.5281794899. The cubic root of 91040760 is about 449.8612905815.

Adding to 91040760 its reverse (6704019), we get a palindrome (97744779).

The spelling of 91040760 in words is "ninety-one million, forty thousand, seven hundred sixty".