2561748 has 24 divisors (see below), whose sum is σ = 6831552. Its totient is φ = 731904.

The previous prime is 2561743. The next prime is 2561749. The reversal of 2561748 is 8471652.

2561748 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15165 + ... + 15332.

It is an arithmetic number, because the mean of its divisors is an integer number (284648).

2^2561748 is an apocalyptic number.

2561748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2561748 is an abundant number, since it is smaller than the sum of its proper divisors (4269804).

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

2561748 is a wasteful number, since it uses less digits than its factorization.

2561748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30511 (or 30509 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 2561748 is about 1600.5461567852. The cubic root of 2561748 is about 136.8292044622.

The spelling of 2561748 in words is "two million, five hundred sixty-one thousand, seven hundred forty-eight".