91489632 has 48 divisors (see below), whose sum is σ = 258637680. Its totient is φ = 28150272.

The previous prime is 91489621. The next prime is 91489633. The reversal of 91489632 is 23698419.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91489633) 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, 35407 + ... + 37902.

It is an arithmetic number, because the mean of its divisors is an integer number (5388285).

Almost surely, 2^91489632 is an apocalyptic number.

It is an amenable number.

91489632 is an abundant number, since it is smaller than the sum of its proper divisors (167148048).

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

91489632 is a wasteful number, since it uses less digits than its factorization.

91489632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73335 (or 73327 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 91489632 is about 9565.0212754599. The cubic root of 91489632 is about 450.5994184794.

The spelling of 91489632 in words is "ninety-one million, four hundred eighty-nine thousand, six hundred thirty-two".