2578798 has 16 divisors (see below), whose sum is σ = 4155840. Its totient is φ = 1195776.

The previous prime is 2578787. The next prime is 2578799. The reversal of 2578798 is 8978752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2578799) 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 7 ways as a sum of consecutive naturals, for example, 1963 + ... + 3001.

It is an arithmetic number, because the mean of its divisors is an integer number (259740).

2^2578798 is an apocalyptic number.

2578798 is a deficient number, since it is larger than the sum of its proper divisors (1577042).

2578798 is a wasteful number, since it uses less digits than its factorization.

2578798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131.

The product of its digits is 282240, while the sum is 46.

The square root of 2578798 is about 1605.8636305739. The cubic root of 2578798 is about 137.1320941661.

Subtracting from 2578798 its sum of digits (46), we obtain a palindrome (2578752).

The spelling of 2578798 in words is "two million, five hundred seventy-eight thousand, seven hundred ninety-eight".