2821290 has 32 divisors (see below), whose sum is σ = 6825600. Its totient is φ = 746304.

The previous prime is 2821289. The next prime is 2821319. The reversal of 2821290 is 921282.

It is a self number, because there is not a number n which added to its sum of digits gives 2821290.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4411 + ... + 5009.

It is an arithmetic number, because the mean of its divisors is an integer number (213300).

2^2821290 is an apocalyptic number.

2821290 is an abundant number, since it is smaller than the sum of its proper divisors (4004310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2821290 is a wasteful number, since it uses less digits than its factorization.

2821290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 2821290 is about 1679.6696103698. The cubic root of 2821290 is about 141.3023039649.

The spelling of 2821290 in words is "two million, eight hundred twenty-one thousand, two hundred ninety".