284260428 has 84 divisors (see below), whose sum is σ = 756898128. Its totient is φ = 93350880.

The previous prime is 284260423. The next prime is 284260429. The reversal of 284260428 is 824062482.

It is a happy number.

284260428 is a `hidden beast` number, since 2 + 8 + 42 + 604 + 2 + 8 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 284260392 and 284260401.

It is not an unprimeable number, because it can be changed into a prime (284260423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 206350 + ... + 207722.

It is an arithmetic number, because the mean of its divisors is an integer number (9010692).

Almost surely, 2^284260428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 284260428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378449064).

284260428 is an abundant number, since it is smaller than the sum of its proper divisors (472637700).

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

284260428 is a wasteful number, since it uses less digits than its factorization.

284260428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466 (or 1449 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The square root of 284260428 is about 16860.0245551423. The cubic root of 284260428 is about 657.5147026933.

The spelling of 284260428 in words is "two hundred eighty-four million, two hundred sixty thousand, four hundred twenty-eight".