91532008 has 32 divisors (see below), whose sum is σ = 176904000. Its totient is φ = 44371840.

The previous prime is 91532003. The next prime is 91532009. The reversal of 91532008 is 80023519.

It is not an unprimeable number, because it can be changed into a prime (91532003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57933 + ... + 59491.

It is an arithmetic number, because the mean of its divisors is an integer number (5528250).

Almost surely, 2^91532008 is an apocalyptic number.

It is an amenable number.

91532008 is a deficient number, since it is larger than the sum of its proper divisors (85371992).

91532008 is a wasteful number, since it uses less digits than its factorization.

91532008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785 (or 1781 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 91532008 is about 9567.2361735247. The cubic root of 91532008 is about 450.6689770120.

It can be divided in two parts, 915 and 32008, that added together give a palindrome (32923).

The spelling of 91532008 in words is "ninety-one million, five hundred thirty-two thousand, eight".