2778285552 has 80 divisors (see below), whose sum is σ = 8559214080. Its totient is φ = 759280896.

The previous prime is 2778285541. The next prime is 2778285553. The reversal of 2778285552 is 2555828772.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2778285495 and 2778285504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778285553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172027 + ... + 187482.

It is an arithmetic number, because the mean of its divisors is an integer number (106990176).

Almost surely, 2^2778285552 is an apocalyptic number.

It is an amenable number.

2778285552 is an abundant number, since it is smaller than the sum of its proper divisors (5780928528).

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

2778285552 is a wasteful number, since it uses less digits than its factorization.

2778285552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359550 (or 359544 counting only the distinct ones).

The product of its digits is 3136000, while the sum is 51.

The square root of 2778285552 is about 52709.4446185880. Note that the first 3 decimals coincide. The cubic root of 2778285552 is about 1405.8067582907.

The spelling of 2778285552 in words is "two billion, seven hundred seventy-eight million, two hundred eighty-five thousand, five hundred fifty-two".