2489656 has 32 divisors (see below), whose sum is σ = 5171040. Its totient is φ = 1116288.

The previous prime is 2489647. The next prime is 2489659. The reversal of 2489656 is 6569842.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2489659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3525 + ... + 4171.

It is an arithmetic number, because the mean of its divisors is an integer number (161595).

2^2489656 is an apocalyptic number.

2489656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2489656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2585520).

2489656 is an abundant number, since it is smaller than the sum of its proper divisors (2681384).

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

2489656 is a wasteful number, since it uses less digits than its factorization.

2489656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703 (or 699 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 2489656 is about 1577.8643794699. The cubic root of 2489656 is about 135.5334358286.

The spelling of 2489656 in words is "two million, four hundred eighty-nine thousand, six hundred fifty-six".