9921232 has 20 divisors (see below), whose sum is σ = 19284480. Its totient is φ = 4944608.

The previous prime is 9921227. The next prime is 9921259. The reversal of 9921232 is 2321299.

It is a self number, because there is not a number n which added to its sum of digits gives 9921232.

It is a congruent number.

It is an unprimeable number.

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, 5319 + ... + 6937.

It is an arithmetic number, because the mean of its divisors is an integer number (964224).

Almost surely, 2^9921232 is an apocalyptic number.

It is an amenable number.

9921232 is a deficient number, since it is larger than the sum of its proper divisors (9363248).

9921232 is a wasteful number, since it uses less digits than its factorization.

9921232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010 (or 2004 counting only the distinct ones).

The product of its digits is 1944, while the sum is 28.

The square root of 9921232 is about 3149.7987237282. The cubic root of 9921232 is about 214.8763088785.

It can be divided in two parts, 9921 and 232, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 9921232 in words is "nine million, nine hundred twenty-one thousand, two hundred thirty-two".