2530278 has 20 divisors (see below), whose sum is σ = 5670060. Its totient is φ = 843372.

The previous prime is 2530277. The next prime is 2530289. The reversal of 2530278 is 8720352.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2530271) 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 9 ways as a sum of consecutive naturals, for example, 7648 + ... + 7971.

It is an arithmetic number, because the mean of its divisors is an integer number (283503).

2^2530278 is an apocalyptic number.

2530278 is an abundant number, since it is smaller than the sum of its proper divisors (3139782).

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

2530278 is a wasteful number, since it uses less digits than its factorization.

2530278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15633 (or 15624 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 2530278 is about 1590.6847582095. The cubic root of 2530278 is about 136.2665978714.

It can be divided in two parts, 25 and 30278, that added together give a palindrome (30303).

The spelling of 2530278 in words is "two million, five hundred thirty thousand, two hundred seventy-eight".