91348878 has 32 divisors (see below), whose sum is σ = 189130752. Its totient is φ = 29383200.

The previous prime is 91348843. The next prime is 91348879. The reversal of 91348878 is 87884319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91348879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122575 + ... + 123317.

It is an arithmetic number, because the mean of its divisors is an integer number (5910336).

Almost surely, 2^91348878 is an apocalyptic number.

91348878 is an abundant number, since it is smaller than the sum of its proper divisors (97781874).

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

91348878 is a wasteful number, since it uses less digits than its factorization.

91348878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440.

The product of its digits is 387072, while the sum is 48.

The square root of 91348878 is about 9557.6606970534. The cubic root of 91348878 is about 450.3682220691.

The spelling of 91348878 in words is "ninety-one million, three hundred forty-eight thousand, eight hundred seventy-eight".