2578986 has 32 divisors (see below), whose sum is σ = 5785920. Its totient is φ = 851472.

The previous prime is 2578973. The next prime is 2578987. The reversal of 2578986 is 6898752.

2578986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2578987) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8656 + ... + 8948.

It is an arithmetic number, because the mean of its divisors is an integer number (180810).

2^2578986 is an apocalyptic number.

2578986 is an abundant number, since it is smaller than the sum of its proper divisors (3206934).

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

2578986 is a wasteful number, since it uses less digits than its factorization.

2578986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467 (or 461 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 2578986 is about 1605.9221649881. The cubic root of 2578986 is about 137.1354264947.

The spelling of 2578986 in words is "two million, five hundred seventy-eight thousand, nine hundred eighty-six".