2578395 has 32 divisors (see below), whose sum is σ = 4435200. Its totient is φ = 1275264.

The previous prime is 2578393. The next prime is 2578403. The reversal of 2578395 is 5938752.

It is not a de Polignac number, because 2578395 - 2¹ = 2578393 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2578391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23601 + ... + 23709.

It is an arithmetic number, because the mean of its divisors is an integer number (138600).

2^2578395 is an apocalyptic number.

2578395 is a deficient number, since it is larger than the sum of its proper divisors (1856805).

2578395 is a wasteful number, since it uses less digits than its factorization.

2578395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219.

The product of its digits is 75600, while the sum is 39.

The square root of 2578395 is about 1605.7381480179. The cubic root of 2578395 is about 137.1249503840.

It can be divided in two parts, 25783 and 95, that added together give a triangular number (25878 = T₂₂₇).

The spelling of 2578395 in words is "two million, five hundred seventy-eight thousand, three hundred ninety-five".