2578266 has 24 divisors (see below), whose sum is σ = 5619744. Its totient is φ = 854280.

The previous prime is 2578259. The next prime is 2578267. The reversal of 2578266 is 6628752.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2578266.

It is not an unprimeable number, because it can be changed into a prime (2578267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3771 + ... + 4401.

It is an arithmetic number, because the mean of its divisors is an integer number (234156).

2^2578266 is an apocalyptic number.

2578266 is an abundant number, since it is smaller than the sum of its proper divisors (3041478).

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

2578266 is a wasteful number, since it uses less digits than its factorization.

2578266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 863 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 2578266 is about 1605.6979790733. The cubic root of 2578266 is about 137.1226635074.

The spelling of 2578266 in words is "two million, five hundred seventy-eight thousand, two hundred sixty-six".