284939340 has 96 divisors (see below), whose sum is σ = 934101504. Its totient is φ = 63536640.

The previous prime is 284939327. The next prime is 284939351. The reversal of 284939340 is 43939482.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 284939292 and 284939301.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8947 + ... + 25493.

It is an arithmetic number, because the mean of its divisors is an integer number (9730224).

Almost surely, 2^284939340 is an apocalyptic number.

284939340 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 284939340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (467050752).

284939340 is an abundant number, since it is smaller than the sum of its proper divisors (649162164).

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

284939340 is a wasteful number, since it uses less digits than its factorization.

284939340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16607 (or 16605 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 284939340 is about 16880.1463263800. The cubic root of 284939340 is about 658.0377438523.

The spelling of 284939340 in words is "two hundred eighty-four million, nine hundred thirty-nine thousand, three hundred forty".