2780798976 has 84 divisors (see below), whose sum is σ = 8033141922. Its totient is φ = 926908416.

The previous prime is 2780798957. The next prime is 2780799023. The reversal of 2780798976 is 6798970872.

It can be written as a sum of positive squares in only one way, i.e., 1519128576 + 1261670400 = 38976^2 + 35520^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 54870 + ... + 92586.

Almost surely, 2^2780798976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2780798976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4016570961).

2780798976 is an abundant number, since it is smaller than the sum of its proper divisors (5252342946).

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

2780798976 is an equidigital number, since it uses as much as digits as its factorization.

2780798976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37749 (or 37722 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 63.

The square root of 2780798976 is about 52733.2814833289. The cubic root of 2780798976 is about 1406.2305596364.

The spelling of 2780798976 in words is "two billion, seven hundred eighty million, seven hundred ninety-eight thousand, nine hundred seventy-six".