283712220 has 336 divisors, whose sum is σ = 1024621920. Its totient is φ = 65318400.

The previous prime is 283712213. The next prime is 283712287. The reversal of 283712220 is 22217382.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 4650990 + ... + 4651050.

It is an arithmetic number, because the mean of its divisors is an integer number (3049470).

Almost surely, 2^283712220 is an apocalyptic number.

283712220 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 283712220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (512310960).

283712220 is an abundant number, since it is smaller than the sum of its proper divisors (740909700).

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

283712220 is a wasteful number, since it uses less digits than its factorization.

283712220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 283712220 is about 16843.7590816302. The cubic root of 283712220 is about 657.0917492434.

The spelling of 283712220 in words is "two hundred eighty-three million, seven hundred twelve thousand, two hundred twenty".