91812448 has 96 divisors (see below), whose sum is σ = 228191040. Its totient is φ = 35389440.

The previous prime is 91812403. The next prime is 91812451. The reversal of 91812448 is 84421819.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 119008 + ... + 119776.

It is an arithmetic number, because the mean of its divisors is an integer number (2376990).

Almost surely, 2^91812448 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 91812448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114095520).

91812448 is an abundant number, since it is smaller than the sum of its proper divisors (136378592).

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

91812448 is a wasteful number, since it uses less digits than its factorization.

91812448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840 (or 832 counting only the distinct ones).

The product of its digits is 18432, while the sum is 37.

The square root of 91812448 is about 9581.8812349142. The cubic root of 91812448 is about 451.1287679076.

It can be divided in two parts, 918 and 12448, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 91812448 in words is "ninety-one million, eight hundred twelve thousand, four hundred forty-eight".