2490990 has 32 divisors (see below), whose sum is σ = 6120576. Its totient is φ = 648480.

The previous prime is 2490973. The next prime is 2490997. The reversal of 2490990 is 990942.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2490997) 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, 325 + ... + 2255.

It is an arithmetic number, because the mean of its divisors is an integer number (191268).

2^2490990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2490990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3060288).

2490990 is an abundant number, since it is smaller than the sum of its proper divisors (3629586).

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

2490990 is a wasteful number, since it uses less digits than its factorization.

2490990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 2490990 is about 1578.2870461358. The cubic root of 2490990 is about 135.5576385458.

The spelling of 2490990 in words is "two million, four hundred ninety thousand, nine hundred ninety".