2778265242 has 24 divisors (see below), whose sum is σ = 6021973620. Its totient is φ = 925719360.

The previous prime is 2778265241. The next prime is 2778265267. The reversal of 2778265242 is 2425628772.

2778265242 is a `hidden beast` number, since 277 + 82 + 65 + 242 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2776130721 + 2134521 = 52689^2 + 1461^2 .

It is not an unprimeable number, because it can be changed into a prime (2778265241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17734 + ... + 76622.

Almost surely, 2^2778265242 is an apocalyptic number.

2778265242 is an abundant number, since it is smaller than the sum of its proper divisors (3243708378).

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

2778265242 is a wasteful number, since it uses less digits than its factorization.

2778265242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61518 (or 61515 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The square root of 2778265242 is about 52709.2519582663. The cubic root of 2778265242 is about 1405.8033326763.

The spelling of 2778265242 in words is "two billion, seven hundred seventy-eight million, two hundred sixty-five thousand, two hundred forty-two".