2782855812 has 48 divisors (see below), whose sum is σ = 7256418624. Its totient is φ = 822720000.

The previous prime is 2782855799. The next prime is 2782855837. The reversal of 2782855812 is 2185582872.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251689 + ... + 262512.

It is an arithmetic number, because the mean of its divisors is an integer number (151175388).

Almost surely, 2^2782855812 is an apocalyptic number.

2782855812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2782855812 is an abundant number, since it is smaller than the sum of its proper divisors (4473562812).

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

2782855812 is a wasteful number, since it uses less digits than its factorization.

2782855812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514260 (or 514258 counting only the distinct ones).

The product of its digits is 716800, while the sum is 48.

The square root of 2782855812 is about 52752.7801352687. The cubic root of 2782855812 is about 1406.5771833746.

The spelling of 2782855812 in words is "two billion, seven hundred eighty-two million, eight hundred fifty-five thousand, eight hundred twelve".