91232732 has 12 divisors (see below), whose sum is σ = 159735576. Its totient is φ = 45594000.

The previous prime is 91232717. The next prime is 91232741. The reversal of 91232732 is 23723219.

It is a super-2 number, since 2×91232732² = 16646822776367648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91232695 and 91232704.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6482 + ... + 14982.

It is an arithmetic number, because the mean of its divisors is an integer number (13311298).

Almost surely, 2^91232732 is an apocalyptic number.

It is an amenable number.

91232732 is a deficient number, since it is larger than the sum of its proper divisors (68502844).

91232732 is a wasteful number, since it uses less digits than its factorization.

91232732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11188 (or 11186 counting only the distinct ones).

The product of its digits is 4536, while the sum is 29.

The square root of 91232732 is about 9551.5826960771. The cubic root of 91232732 is about 450.1772667863.

The spelling of 91232732 in words is "ninety-one million, two hundred thirty-two thousand, seven hundred thirty-two".