91628241 has 8 divisors (see below), whose sum is σ = 128601120. Its totient is φ = 57870432.

The previous prime is 91628233. The next prime is 91628261. The reversal of 91628241 is 14282619.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91628241 - 2³ = 91628233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91628231) 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, 803700 + ... + 803813.

It is an arithmetic number, because the mean of its divisors is an integer number (16075140).

Almost surely, 2^91628241 is an apocalyptic number.

It is an amenable number.

91628241 is a deficient number, since it is larger than the sum of its proper divisors (36972879).

91628241 is a wasteful number, since it uses less digits than its factorization.

91628241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607535.

The product of its digits is 6912, while the sum is 33.

The square root of 91628241 is about 9572.2641522265. The cubic root of 91628241 is about 450.8268599887.

The spelling of 91628241 in words is "ninety-one million, six hundred twenty-eight thousand, two hundred forty-one".