2991224 has 8 divisors (see below), whose sum is σ = 5608560. Its totient is φ = 1495608.

The previous prime is 2991217. The next prime is 2991229. The reversal of 2991224 is 4221992.

2991224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2991229) by changing a digit.

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 as a sum of consecutive naturals, namely, 186944 + ... + 186959.

It is an arithmetic number, because the mean of its divisors is an integer number (701070).

2^2991224 is an apocalyptic number.

It is an amenable number.

2991224 is a deficient number, since it is larger than the sum of its proper divisors (2617336).

2991224 is a wasteful number, since it uses less digits than its factorization.

2991224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373909 (or 373905 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 2991224 is about 1729.5155391034. The cubic root of 2991224 is about 144.0841843142.

The spelling of 2991224 in words is "two million, nine hundred ninety-one thousand, two hundred twenty-four".