91676728 has 64 divisors (see below), whose sum is σ = 203857920. Its totient is φ = 38102400.

The previous prime is 91676719. The next prime is 91676747. The reversal of 91676728 is 82767619.

It is a happy number.

Its product of digits (254016) is a multiple of the sum of its prime divisors (784).

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, 144973 + ... + 145603.

It is an arithmetic number, because the mean of its divisors is an integer number (3185280).

Almost surely, 2^91676728 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 91676728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101928960).

91676728 is an abundant number, since it is smaller than the sum of its proper divisors (112181192).

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

91676728 is a wasteful number, since it uses less digits than its factorization.

91676728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788 (or 784 counting only the distinct ones).

The product of its digits is 254016, while the sum is 46.

The square root of 91676728 is about 9574.7964991429. The cubic root of 91676728 is about 450.9063674531.

The spelling of 91676728 in words is "ninety-one million, six hundred seventy-six thousand, seven hundred twenty-eight".