2493656 has 32 divisors (see below), whose sum is σ = 5227200. Its totient is φ = 1105440.

The previous prime is 2493653. The next prime is 2493707. The reversal of 2493656 is 6563942.

It is a Smith number, since the sum of its digits (35) 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 (2493653) 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, 3455 + ... + 4113.

It is an arithmetic number, because the mean of its divisors is an integer number (163350).

2^2493656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2493656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2613600).

2493656 is an abundant number, since it is smaller than the sum of its proper divisors (2733544).

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

2493656 is a wasteful number, since it uses less digits than its factorization.

2493656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 715 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 2493656 is about 1579.1314068183. The cubic root of 2493656 is about 135.6059818166.

The spelling of 2493656 in words is "two million, four hundred ninety-three thousand, six hundred fifty-six".