2490813 has 24 divisors (see below), whose sum is σ = 3949400. Its totient is φ = 1503360.

The previous prime is 2490811. The next prime is 2490821. The reversal of 2490813 is 3180942.

It can be written as a sum of positive squares in 4 ways, for example, as 729 + 2490084 = 27^2 + 1578^2 .

It is not a de Polignac number, because 2490813 - 2¹ = 2490811 is a prime.

2490813 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2490811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6963 + ... + 7311.

2^2490813 is an apocalyptic number.

It is an amenable number.

2490813 is a deficient number, since it is larger than the sum of its proper divisors (1458587).

2490813 is a wasteful number, since it uses less digits than its factorization.

2490813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2490813 is about 1578.2309716895. The cubic root of 2490813 is about 135.5544277380.

The spelling of 2490813 in words is "two million, four hundred ninety thousand, eight hundred thirteen".