91344288 has 48 divisors (see below), whose sum is σ = 274034880. Its totient is φ = 26098176.

The previous prime is 91344283. The next prime is 91344313. The reversal of 91344288 is 88244319.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (91344283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67293 + ... + 68636.

It is an arithmetic number, because the mean of its divisors is an integer number (5709060).

Almost surely, 2^91344288 is an apocalyptic number.

It is an amenable number.

91344288 is an abundant number, since it is smaller than the sum of its proper divisors (182690592).

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

91344288 is a wasteful number, since it uses less digits than its factorization.

91344288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135949 (or 135941 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 91344288 is about 9557.4205725185. The cubic root of 91344288 is about 450.3606787370.

The spelling of 91344288 in words is "ninety-one million, three hundred forty-four thousand, two hundred eighty-eight".