2820290 has 16 divisors (see below), whose sum is σ = 5538240. Its totient is φ = 1025520.

The previous prime is 2820271. The next prime is 2820313. The reversal of 2820290 is 920282.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12710 + ... + 12929.

It is an arithmetic number, because the mean of its divisors is an integer number (346140).

2^2820290 is an apocalyptic number.

2820290 is a deficient number, since it is larger than the sum of its proper divisors (2717950).

2820290 is a wasteful number, since it uses less digits than its factorization.

2820290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25657.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2820290 is about 1679.3719063983. The cubic root of 2820290 is about 141.2856072291.

The spelling of 2820290 in words is "two million, eight hundred twenty thousand, two hundred ninety".