2291284 has 6 divisors (see below), whose sum is σ = 4009754. Its totient is φ = 1145640.

The previous prime is 2291281. The next prime is 2291287. The reversal of 2291284 is 4821922.

2291284 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2291281) and next prime (2291287).

It can be written as a sum of positive squares in only one way, i.e., 1904400 + 386884 = 1380^2 + 622^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291281) 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, 286407 + ... + 286414.

2^2291284 is an apocalyptic number.

It is an amenable number.

2291284 is a deficient number, since it is larger than the sum of its proper divisors (1718470).

2291284 is a wasteful number, since it uses less digits than its factorization.

2291284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572825 (or 572823 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 2291284 is about 1513.6987811318. The cubic root of 2291284 is about 131.8336594661.

The spelling of 2291284 in words is "two million, two hundred ninety-one thousand, two hundred eighty-four".