2578293 has 6 divisors (see below), whose sum is σ = 3724214. Its totient is φ = 1718856.

The previous prime is 2578273. The next prime is 2578297. The reversal of 2578293 is 3928752.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2490084 + 88209 = 1578^2 + 297^2 .

It is not a de Polignac number, because 2578293 - 2²¹ = 481141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2578297) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 143230 + ... + 143247.

2^2578293 is an apocalyptic number.

It is an amenable number.

2578293 is a deficient number, since it is larger than the sum of its proper divisors (1145921).

2578293 is a wasteful number, since it uses less digits than its factorization.

2578293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286483 (or 286480 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 2578293 is about 1605.7063866100. The cubic root of 2578293 is about 137.1231421623.

The spelling of 2578293 in words is "two million, five hundred seventy-eight thousand, two hundred ninety-three".