283856560 has 80 divisors (see below), whose sum is σ = 714954240. Its totient is φ = 104186880.

The previous prime is 283856539. The next prime is 283856569. The reversal of 283856560 is 65658382.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (283856569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197926 + ... + 199354.

It is an arithmetic number, because the mean of its divisors is an integer number (8936928).

Almost surely, 2^283856560 is an apocalyptic number.

283856560 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 283856560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357477120).

283856560 is an abundant number, since it is smaller than the sum of its proper divisors (431097680).

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

283856560 is a wasteful number, since it uses less digits than its factorization.

283856560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646 (or 1640 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The square root of 283856560 is about 16848.0432098211. The cubic root of 283856560 is about 657.2031632476.

The spelling of 283856560 in words is "two hundred eighty-three million, eight hundred fifty-six thousand, five hundred sixty".