91285008 has 20 divisors (see below), whose sum is σ = 235819728. Its totient is φ = 30428320.

The previous prime is 91285003. The next prime is 91285013. The reversal of 91285008 is 80058219.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (91285003) and next prime (91285013).

It is a self number, because there is not a number n which added to its sum of digits gives 91285008.

It is not an unprimeable number, because it can be changed into a prime (91285003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 950838 + ... + 950933.

Almost surely, 2^91285008 is an apocalyptic number.

It is an amenable number.

91285008 is an abundant number, since it is smaller than the sum of its proper divisors (144534720).

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

91285008 is a wasteful number, since it uses less digits than its factorization.

91285008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901782 (or 1901776 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 91285008 is about 9554.3188140233. The cubic root of 91285008 is about 450.2632336422.

The spelling of 91285008 in words is "ninety-one million, two hundred eighty-five thousand, eight".