2782758280 has 32 divisors (see below), whose sum is σ = 6263538840. Its totient is φ = 1112688640.

The previous prime is 2782758263. The next prime is 2782758289. The reversal of 2782758280 is 828572872.

It can be written as a sum of positive squares in 4 ways, for example, as 2766549604 + 16208676 = 52598^2 + 4026^2 .

It is not an unprimeable number, because it can be changed into a prime (2782758289) 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, 110202 + ... + 133078.

Almost surely, 2^2782758280 is an apocalyptic number.

2782758280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2782758280 is an abundant number, since it is smaller than the sum of its proper divisors (3480780560).

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

2782758280 is a wasteful number, since it uses less digits than its factorization.

2782758280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25929 (or 25925 counting only the distinct ones).

The product of its (nonzero) digits is 1003520, while the sum is 49.

The square root of 2782758280 is about 52751.8557019561. The cubic root of 2782758280 is about 1406.5607508681.

The spelling of 2782758280 in words is "two billion, seven hundred eighty-two million, seven hundred fifty-eight thousand, two hundred eighty".