2578028 has 6 divisors (see below), whose sum is σ = 4511556. Its totient is φ = 1289012.

The previous prime is 2578027. The next prime is 2578031. The reversal of 2578028 is 8208752.

It is a junction number, because it is equal to n+sod(n) for n = 2577985 and 2578003.

It is not an unprimeable number, because it can be changed into a prime (2578027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322250 + ... + 322257.

It is an arithmetic number, because the mean of its divisors is an integer number (751926).

2^2578028 is an apocalyptic number.

It is an amenable number.

2578028 is a deficient number, since it is larger than the sum of its proper divisors (1933528).

2578028 is a wasteful number, since it uses less digits than its factorization.

2578028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644511 (or 644509 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2578028 is about 1605.6238662900. The cubic root of 2578028 is about 137.1184441085.

The spelling of 2578028 in words is "two million, five hundred seventy-eight thousand, twenty-eight".