2781047028 has 24 divisors (see below), whose sum is σ = 6496289632. Its totient is φ = 925989984.

The previous prime is 2781046997. The next prime is 2781047041. The reversal of 2781047028 is 8207401872.

2781047028 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116875 + ... + 138642.

Almost surely, 2^2781047028 is an apocalyptic number.

It is an amenable number.

2781047028 is an abundant number, since it is smaller than the sum of its proper divisors (3715242604).

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

2781047028 is a wasteful number, since it uses less digits than its factorization.

2781047028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256431 (or 256429 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 2781047028 is about 52735.6333800970. The cubic root of 2781047028 is about 1406.2723711128.

The spelling of 2781047028 in words is "two billion, seven hundred eighty-one million, forty-seven thousand, twenty-eight".