2556330 has 96 divisors (see below), whose sum is σ = 7485696. Its totient is φ = 556416.

The previous prime is 2556277. The next prime is 2556331. The reversal of 2556330 is 336552.

It is a d-powerful number, because it can be written as 2¹⁹ + 5⁷ + 5⁹ + 6² + 3³ + 3⁶ + 0 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2556330.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556331) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54367 + ... + 54413.

It is an arithmetic number, because the mean of its divisors is an integer number (77976).

2^2556330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2556330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3742848).

2556330 is an abundant number, since it is smaller than the sum of its proper divisors (4929366).

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

2556330 is a wasteful number, since it uses less digits than its factorization.

2556330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 2556330 is about 1598.8527136669. The cubic root of 2556330 is about 136.7326735153.

The spelling of 2556330 in words is "two million, five hundred fifty-six thousand, three hundred thirty".