284643740 has 12 divisors (see below), whose sum is σ = 597751896. Its totient is φ = 113857488.

The previous prime is 284643739. The next prime is 284643773. The reversal of 284643740 is 47346482.

It is a junction number, because it is equal to n+sod(n) for n = 284643694 and 284643703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7116074 + ... + 7116113.

It is an arithmetic number, because the mean of its divisors is an integer number (49812658).

Almost surely, 2^284643740 is an apocalyptic number.

284643740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

284643740 is an abundant number, since it is smaller than the sum of its proper divisors (313108156).

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

284643740 is a wasteful number, since it uses less digits than its factorization.

284643740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14232196 (or 14232194 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 38.

The square root of 284643740 is about 16871.3882060724. The cubic root of 284643740 is about 657.8101126421.

The spelling of 284643740 in words is "two hundred eighty-four million, six hundred forty-three thousand, seven hundred forty".