2821268 has 6 divisors (see below), whose sum is σ = 4937226. Its totient is φ = 1410632.

The previous prime is 2821267. The next prime is 2821277. The reversal of 2821268 is 8621282.

It can be written as a sum of positive squares in only one way, i.e., 2067844 + 753424 = 1438^2 + 868^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2821268.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2821267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352655 + ... + 352662.

It is an arithmetic number, because the mean of its divisors is an integer number (822871).

2^2821268 is an apocalyptic number.

It is an amenable number.

2821268 is a deficient number, since it is larger than the sum of its proper divisors (2115958).

2821268 is a wasteful number, since it uses less digits than its factorization.

2821268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705321 (or 705319 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 2821268 is about 1679.6630614501. The cubic root of 2821268 is about 141.3019366792.

The spelling of 2821268 in words is "two million, eight hundred twenty-one thousand, two hundred sixty-eight".