2851290 has 48 divisors (see below), whose sum is σ = 7986888. Its totient is φ = 701568.

The previous prime is 2851267. The next prime is 2851313. The reversal of 2851290 is 921582.

2851290 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 (2851267) and next prime (2851313).

It can be written as a sum of positive squares in 4 ways, for example, as 2442969 + 408321 = 1563^2 + 639^2 .

It is a Curzon number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 49 + ... + 2388.

2^2851290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2851290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3993444).

2851290 is an abundant number, since it is smaller than the sum of its proper divisors (5135598).

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

2851290 is a wasteful number, since it uses less digits than its factorization.

2851290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2463 (or 2460 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 2851290 is about 1688.5763234157. The cubic root of 2851290 is about 141.8013820426.

The spelling of 2851290 in words is "two million, eight hundred fifty-one thousand, two hundred ninety".