284316380 has 72 divisors (see below), whose sum is σ = 642896352. Its totient is φ = 105565824.

The previous prime is 284316353. The next prime is 284316391. The reversal of 284316380 is 83613482.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 284316380.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 382289 + ... + 383031.

It is an arithmetic number, because the mean of its divisors is an integer number (8929116).

Almost surely, 2^284316380 is an apocalyptic number.

284316380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 284316380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321448176).

284316380 is an abundant number, since it is smaller than the sum of its proper divisors (358579972).

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

284316380 is a wasteful number, since it uses less digits than its factorization.

284316380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 284316380 is about 16861.6837830627. The cubic root of 284316380 is about 657.5578401892.

The spelling of 284316380 in words is "two hundred eighty-four million, three hundred sixteen thousand, three hundred eighty".