2890890 has 80 divisors (see below), whose sum is σ = 8049888. Its totient is φ = 743904.

The previous prime is 2890889. The next prime is 2890897. The reversal of 2890890 is 980982.

It is not an unprimeable number, because it can be changed into a prime (2890897) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 34789 + ... + 34871.

2^2890890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2890890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4024944).

2890890 is an abundant number, since it is smaller than the sum of its proper divisors (5158998).

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

2890890 is a wasteful number, since it uses less digits than its factorization.

2890890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 2890890 is about 1700.2617445558. The cubic root of 2890890 is about 142.4548333310.

The spelling of 2890890 in words is "two million, eight hundred ninety thousand, eight hundred ninety".