285002280 has 384 divisors, whose sum is σ = 1086307200. Its totient is φ = 66189312.

The previous prime is 285002279. The next prime is 285002287. The reversal of 285002280 is 82200582.

It is a super-3 number, since 3×285002280³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (285002287) 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 95 ways as a sum of consecutive naturals, for example, 6627939 + ... + 6627981.

It is an arithmetic number, because the mean of its divisors is an integer number (2828925).

Almost surely, 2^285002280 is an apocalyptic number.

285002280 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 285002280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (543153600).

285002280 is an abundant number, since it is smaller than the sum of its proper divisors (801304920).

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

285002280 is a wasteful number, since it uses less digits than its factorization.

285002280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 285002280 is about 16882.0105437711. The cubic root of 285002280 is about 658.0861914113.

The spelling of 285002280 in words is "two hundred eighty-five million, two thousand, two hundred eighty".