2801890 has 32 divisors (see below), whose sum is σ = 6209280. Its totient is φ = 886464.

The previous prime is 2801863. The next prime is 2801891. The reversal of 2801890 is 981082.

It is not an unprimeable number, because it can be changed into a prime (2801891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 630 + ... + 2449.

It is an arithmetic number, because the mean of its divisors is an integer number (194040).

2^2801890 is an apocalyptic number.

2801890 is an abundant number, since it is smaller than the sum of its proper divisors (3407390).

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

2801890 is a wasteful number, since it uses less digits than its factorization.

2801890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 2801890 is about 1673.8847033174. The cubic root of 2801890 is about 140.9776803529.

The spelling of 2801890 in words is "two million, eight hundred one thousand, eight hundred ninety".