284939428440 has 64 divisors (see below), whose sum is σ = 858068640000. Its totient is φ = 75694927232.

The previous prime is 284939428427. The next prime is 284939428451. The reversal of 284939428440 is 44824939482.

It is a congruent number.

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, 4482690 + ... + 4545809.

It is an arithmetic number, because the mean of its divisors is an integer number (13407322500).

Almost surely, 2^284939428440 is an apocalyptic number.

284939428440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

284939428440 is an abundant number, since it is smaller than the sum of its proper divisors (573129211560).

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

284939428440 is a wasteful number, since it uses less digits than its factorization.

284939428440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9028776 (or 9028772 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 57.

The spelling of 284939428440 in words is "two hundred eighty-four billion, nine hundred thirty-nine million, four hundred twenty-eight thousand, four hundred forty".