2530778 has 8 divisors (see below), whose sum is σ = 3918720. Its totient is φ = 1224540.

The previous prime is 2530777. The next prime is 2530783. The reversal of 2530778 is 8770352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2530777) 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 3 ways as a sum of consecutive naturals, for example, 20348 + ... + 20471.

It is an arithmetic number, because the mean of its divisors is an integer number (489840).

2^2530778 is an apocalyptic number.

2530778 is a deficient number, since it is larger than the sum of its proper divisors (1387942).

2530778 is a wasteful number, since it uses less digits than its factorization.

2530778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40852.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 2530778 is about 1590.8419154649. The cubic root of 2530778 is about 136.2755730132.

It can be divided in two parts, 25 and 30778, that added together give a palindrome (30803).

The spelling of 2530778 in words is "two million, five hundred thirty thousand, seven hundred seventy-eight".