2556996 has 48 divisors (see below), whose sum is σ = 6613824. Its totient is φ = 763776.

The previous prime is 2556991. The next prime is 2556997. The reversal of 2556996 is 6996552.

It is not an unprimeable number, because it can be changed into a prime (2556991) 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 15 ways as a sum of consecutive naturals, for example, 5551 + ... + 5993.

It is an arithmetic number, because the mean of its divisors is an integer number (137788).

2^2556996 is an apocalyptic number.

2556996 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 2556996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3306912).

2556996 is an abundant number, since it is smaller than the sum of its proper divisors (4056828).

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

2556996 is a wasteful number, since it uses less digits than its factorization.

2556996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 498 counting only the distinct ones).

The product of its digits is 145800, while the sum is 42.

The square root of 2556996 is about 1599.0609744472. The cubic root of 2556996 is about 136.7445467937.

The spelling of 2556996 in words is "two million, five hundred fifty-six thousand, nine hundred ninety-six".