2561928 has 16 divisors (see below), whose sum is σ = 6404880. Its totient is φ = 853968.

The previous prime is 2561927. The next prime is 2561929. The reversal of 2561928 is 8291652.

2561928 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2561927) and next prime (2561929).

It is not an unprimeable number, because it can be changed into a prime (2561921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53350 + ... + 53397.

It is an arithmetic number, because the mean of its divisors is an integer number (400305).

2^2561928 is an apocalyptic number.

It is an amenable number.

2561928 is an abundant number, since it is smaller than the sum of its proper divisors (3842952).

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

2561928 is a wasteful number, since it uses less digits than its factorization.

2561928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106756 (or 106752 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 2561928 is about 1600.6023866032. The cubic root of 2561928 is about 136.8324091334.

The spelling of 2561928 in words is "two million, five hundred sixty-one thousand, nine hundred twenty-eight".