2557928 has 16 divisors (see below), whose sum is σ = 4898880. Its totient is φ = 1251568.

The previous prime is 2557909. The next prime is 2557931. The reversal of 2557928 is 8297552.

2557928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2557891 and 2557900.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3026 + ... + 3777.

It is an arithmetic number, because the mean of its divisors is an integer number (306180).

2^2557928 is an apocalyptic number.

It is an amenable number.

2557928 is a deficient number, since it is larger than the sum of its proper divisors (2340952).

2557928 is a wasteful number, since it uses less digits than its factorization.

2557928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6856 (or 6852 counting only the distinct ones).

The product of its digits is 50400, while the sum is 38.

The square root of 2557928 is about 1599.3523689294. The cubic root of 2557928 is about 136.7611587916.

The spelling of 2557928 in words is "two million, five hundred fifty-seven thousand, nine hundred twenty-eight".