283240320 has 128 divisors (see below), whose sum is σ = 984977280. Its totient is φ = 68659200.

The previous prime is 283240313. The next prime is 283240337. The reversal of 283240320 is 23042382.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14415 + ... + 27825.

It is an arithmetic number, because the mean of its divisors is an integer number (7695135).

Almost surely, 2^283240320 is an apocalyptic number.

283240320 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 283240320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (492488640).

283240320 is an abundant number, since it is smaller than the sum of its proper divisors (701736960).

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

283240320 is a wasteful number, since it uses less digits than its factorization.

283240320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13444 (or 13432 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 283240320 is about 16829.7450961089. The cubic root of 283240320 is about 656.7272323683.

The spelling of 283240320 in words is "two hundred eighty-three million, two hundred forty thousand, three hundred twenty".