2578140 has 36 divisors (see below), whose sum is σ = 7820904. Its totient is φ = 687456.

The previous prime is 2578133. The next prime is 2578153. The reversal of 2578140 is 418752.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

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, 6982 + ... + 7341.

2^2578140 is an apocalyptic number.

2578140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2578140 is an abundant number, since it is smaller than the sum of its proper divisors (5242764).

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

2578140 is a wasteful number, since it uses less digits than its factorization.

2578140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14338 (or 14333 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 2578140 is about 1605.6587433200. The cubic root of 2578140 is about 137.1204297403.

The spelling of 2578140 in words is "two million, five hundred seventy-eight thousand, one hundred forty".