2490090 has 16 divisors (see below), whose sum is σ = 5976288. Its totient is φ = 664016.

The previous prime is 2490079. The next prime is 2490091. The reversal of 2490090 is 900942.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2490090.

It is not an unprimeable number, because it can be changed into a prime (2490091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41472 + ... + 41531.

It is an arithmetic number, because the mean of its divisors is an integer number (373518).

2^2490090 is an apocalyptic number.

2490090 is an abundant number, since it is smaller than the sum of its proper divisors (3486198).

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

2490090 is a wasteful number, since it uses less digits than its factorization.

2490090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83013.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 2490090 is about 1578.0019011395. The cubic root of 2490090 is about 135.5413108246.

It can be divided in two parts, 24 and 90090, that multiplied together give a triangular number (2162160 = T₂₀₇₉).

The spelling of 2490090 in words is "two million, four hundred ninety thousand, ninety".