91828123 has 16 divisors (see below), whose sum is σ = 97332480. Its totient is φ = 86508576.

The previous prime is 91828111. The next prime is 91828127. The reversal of 91828123 is 32182819.

It is a cyclic number.

It is not a de Polignac number, because 91828123 - 2¹⁷ = 91697051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91828127) 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, 324340 + ... + 324622.

It is an arithmetic number, because the mean of its divisors is an integer number (6083280).

Almost surely, 2^91828123 is an apocalyptic number.

91828123 is a deficient number, since it is larger than the sum of its proper divisors (5504357).

91828123 is a wasteful number, since it uses less digits than its factorization.

91828123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546.

The product of its digits is 6912, while the sum is 34.

The square root of 91828123 is about 9582.6991500307. The cubic root of 91828123 is about 451.1544399568.

The spelling of 91828123 in words is "ninety-one million, eight hundred twenty-eight thousand, one hundred twenty-three".