284274980 has 96 divisors (see below), whose sum is σ = 671448960. Its totient is φ = 101059200.

The previous prime is 284274971. The next prime is 284274997. The reversal of 284274980 is 89472482.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

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, 1570490 + ... + 1570670.

It is an arithmetic number, because the mean of its divisors is an integer number (6994260).

Almost surely, 2^284274980 is an apocalyptic number.

284274980 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 284274980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335724480).

284274980 is an abundant number, since it is smaller than the sum of its proper divisors (387173980).

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

284274980 is a wasteful number, since it uses less digits than its factorization.

284274980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 284274980 is about 16860.4561029647. The cubic root of 284274980 is about 657.5259224408.

The spelling of 284274980 in words is "two hundred eighty-four million, two hundred seventy-four thousand, nine hundred eighty".