283840280 has 32 divisors (see below), whose sum is σ = 639757440. Its totient is φ = 113337600.

The previous prime is 283840261. The next prime is 283840303. The reversal of 283840280 is 82048382.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 283840280.

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, 18137 + ... + 29943.

It is an arithmetic number, because the mean of its divisors is an integer number (19992420).

Almost surely, 2^283840280 is an apocalyptic number.

283840280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

283840280 is an abundant number, since it is smaller than the sum of its proper divisors (355917160).

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

283840280 is a wasteful number, since it uses less digits than its factorization.

283840280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12419 (or 12415 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 283840280 is about 16847.5600607328. The cubic root of 283840280 is about 657.1905988359.

The spelling of 283840280 in words is "two hundred eighty-three million, eight hundred forty thousand, two hundred eighty".