2490906 has 48 divisors (see below), whose sum is σ = 5668992. Its totient is φ = 728640.

The previous prime is 2490899. The next prime is 2490907. The reversal of 2490906 is 6090942.

It is a super-2 number, since 2×2490906² = 12409225401672, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2490907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34086 + ... + 34158.

It is an arithmetic number, because the mean of its divisors is an integer number (118104).

2^2490906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2490906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2834496).

2490906 is an abundant number, since it is smaller than the sum of its proper divisors (3178086).

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

2490906 is a wasteful number, since it uses less digits than its factorization.

2490906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 2490906 is about 1578.2604347825. The cubic root of 2490906 is about 135.5561147916.

The spelling of 2490906 in words is "two million, four hundred ninety thousand, nine hundred six".