10991132 has 12 divisors (see below), whose sum is σ = 19316640. Its totient is φ = 5472096.

The previous prime is 10991131. The next prime is 10991153. The reversal of 10991132 is 23119901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10991131) by changing a digit.

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, 4793 + ... + 6704.

It is an arithmetic number, because the mean of its divisors is an integer number (1609720).

Almost surely, 2^10991132 is an apocalyptic number.

It is an amenable number.

10991132 is a deficient number, since it is larger than the sum of its proper divisors (8325508).

10991132 is a wasteful number, since it uses less digits than its factorization.

10991132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11740 (or 11738 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 10991132 is about 3315.2876194985. The cubic root of 10991132 is about 222.3382285790.

The spelling of 10991132 in words is "ten million, nine hundred ninety-one thousand, one hundred thirty-two".