2557328 has 10 divisors (see below), whose sum is σ = 4954854. Its totient is φ = 1278656.

The previous prime is 2557297. The next prime is 2557333. The reversal of 2557328 is 8237552.

It can be written as a sum of positive squares in only one way, i.e., 1373584 + 1183744 = 1172^2 + 1088^2 .

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁴ + 5⁸ + 5⁹ + 7⁶ + 3¹⁰ + 2¹⁵ + 8⁴ .

It is a junction number, because it is equal to n+sod(n) for n = 2557294 and 2557303.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79901 + ... + 79932.

2^2557328 is an apocalyptic number.

It is an amenable number.

2557328 is a deficient number, since it is larger than the sum of its proper divisors (2397526).

2557328 is a wasteful number, since it uses less digits than its factorization.

2557328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159841 (or 159835 counting only the distinct ones).

The product of its digits is 16800, while the sum is 32.

The square root of 2557328 is about 1599.1647820034. The cubic root of 2557328 is about 136.7504648352.

The spelling of 2557328 in words is "two million, five hundred fifty-seven thousand, three hundred twenty-eight".