284628020 has 24 divisors (see below), whose sum is σ = 608998824. Its totient is φ = 111702656.

The previous prime is 284628017. The next prime is 284628041. The reversal of 284628020 is 20826482.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 107578384 + 177049636 = 10372^2 + 13306^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 133199 + ... + 135318.

It is an arithmetic number, because the mean of its divisors is an integer number (25374951).

Almost surely, 2^284628020 is an apocalyptic number.

284628020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

284628020 is an abundant number, since it is smaller than the sum of its proper divisors (324370804).

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

284628020 is a wasteful number, since it uses less digits than its factorization.

284628020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268579 (or 268577 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 284628020 is about 16870.9223221494. The cubic root of 284628020 is about 657.7980028081.

The spelling of 284628020 in words is "two hundred eighty-four million, six hundred twenty-eight thousand, twenty".