10991332 has 24 divisors (see below), whose sum is σ = 21897792. Its totient is φ = 4778400.

The previous prime is 10991327. The next prime is 10991339. The reversal of 10991332 is 23319901.

10991332 = 309² + 310² + ... + 396².

It is a self number, because there is not a number n which added to its sum of digits gives 10991332.

It is not an unprimeable number, because it can be changed into a prime (10991339) 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, 4419 + ... + 6442.

It is an arithmetic number, because the mean of its divisors is an integer number (912408).

Almost surely, 2^10991332 is an apocalyptic number.

It is an amenable number.

10991332 is a deficient number, since it is larger than the sum of its proper divisors (10906460).

10991332 is a wasteful number, since it uses less digits than its factorization.

10991332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10899 (or 10897 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 10991332 is about 3315.3177826567. The cubic root of 10991332 is about 222.3395771624.

The spelling of 10991332 in words is "ten million, nine hundred ninety-one thousand, three hundred thirty-two".