284308781812 has 48 divisors (see below), whose sum is σ = 558396768384. Its totient is φ = 125537984000.

The previous prime is 284308781807. The next prime is 284308781819. The reversal of 284308781812 is 218187803482.

It is a self number, because there is not a number n which added to its sum of digits gives 284308781812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284308781819) 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, 82137 + ... + 758527.

It is an arithmetic number, because the mean of its divisors is an integer number (11633266008).

Almost surely, 2^284308781812 is an apocalyptic number.

284308781812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

284308781812 is a deficient number, since it is larger than the sum of its proper divisors (274087986572).

284308781812 is a wasteful number, since it uses less digits than its factorization.

284308781812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676680 (or 676678 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 52.

The spelling of 284308781812 in words is "two hundred eighty-four billion, three hundred eight million, seven hundred eighty-one thousand, eight hundred twelve".