284565420 has 96 divisors (see below), whose sum is σ = 906978240. Its totient is φ = 74027520.

The previous prime is 284565419. The next prime is 284565467. The reversal of 284565420 is 24565482.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 15714 + ... + 28566.

It is an arithmetic number, because the mean of its divisors is an integer number (9447690).

Almost surely, 2^284565420 is an apocalyptic number.

284565420 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 284565420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (453489120).

284565420 is an abundant number, since it is smaller than the sum of its proper divisors (622412820).

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

284565420 is a wasteful number, since it uses less digits than its factorization.

284565420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12912 (or 12904 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The square root of 284565420 is about 16869.0669570074. The cubic root of 284565420 is about 657.7497747451.

It can be divided in two parts, 2845 and 65420, that added together give a triangular number (68265 = T₃₆₉).

The spelling of 284565420 in words is "two hundred eighty-four million, five hundred sixty-five thousand, four hundred twenty".