283530990 has 64 divisors (see below), whose sum is σ = 709067520. Its totient is φ = 72495360.

The previous prime is 283530983. The next prime is 283531009. The reversal of 283530990 is 99035382.

It is a Curzon number.

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, 70617 + ... + 74523.

It is an arithmetic number, because the mean of its divisors is an integer number (11079180).

Almost surely, 2^283530990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 283530990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354533760).

283530990 is an abundant number, since it is smaller than the sum of its proper divisors (425536530).

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

283530990 is a wasteful number, since it uses less digits than its factorization.

283530990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4017.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 283530990 is about 16838.3784848779. The cubic root of 283530990 is about 656.9518068479.

The spelling of 283530990 in words is "two hundred eighty-three million, five hundred thirty thousand, nine hundred ninety".