2578026 has 48 divisors (see below), whose sum is σ = 5860512. Its totient is φ = 755040.

The previous prime is 2578019. The next prime is 2578027. The reversal of 2578026 is 6208752.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2577984 and 2578002.

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 in 23 ways as a sum of consecutive naturals, for example, 38445 + ... + 38511.

It is an arithmetic number, because the mean of its divisors is an integer number (122094).

2^2578026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2578026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2930256).

2578026 is an abundant number, since it is smaller than the sum of its proper divisors (3282486).

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

2578026 is a wasteful number, since it uses less digits than its factorization.

2578026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 2578026 is about 1605.6232434790. The cubic root of 2578026 is about 137.1184086503.

The spelling of 2578026 in words is "two million, five hundred seventy-eight thousand, twenty-six".