2578530280 has 32 divisors (see below), whose sum is σ = 6107047200. Its totient is φ = 977126976.

The previous prime is 2578530257. The next prime is 2578530289. The reversal of 2578530280 is 820358752.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (2578530289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1695642 + ... + 1697161.

It is an arithmetic number, because the mean of its divisors is an integer number (190845225).

Almost surely, 2^2578530280 is an apocalyptic number.

2578530280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2578530280 is an abundant number, since it is smaller than the sum of its proper divisors (3528516920).

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

2578530280 is a wasteful number, since it uses less digits than its factorization.

2578530280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392833 (or 3392829 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 2578530280 is about 50779.2307937015. The cubic root of 2578530280 is about 1371.2734850877.

It can be divided in two parts, 25785 and 30280, that added together give a palindrome (56065).

The spelling of 2578530280 in words is "two billion, five hundred seventy-eight million, five hundred thirty thousand, two hundred eighty".