91306032 has 20 divisors (see below), whose sum is σ = 235874040. Its totient is φ = 30435328.

The previous prime is 91306013. The next prime is 91306037. The reversal of 91306032 is 23060319.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 91305993 and 91306011.

It is not an unprimeable number, because it can be changed into a prime (91306037) 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, 951057 + ... + 951152.

It is an arithmetic number, because the mean of its divisors is an integer number (11793702).

Almost surely, 2^91306032 is an apocalyptic number.

It is an amenable number.

91306032 is an abundant number, since it is smaller than the sum of its proper divisors (144568008).

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

91306032 is a wasteful number, since it uses less digits than its factorization.

91306032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902220 (or 1902214 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 91306032 is about 9555.4189861042. The cubic root of 91306032 is about 450.2977979436.

The spelling of 91306032 in words is "ninety-one million, three hundred six thousand, thirty-two".