283745280 has 528 divisors, whose sum is σ = 1176124320. Its totient is φ = 57802752.

The previous prime is 283745279. The next prime is 283745291. The reversal of 283745280 is 82547382.

It is a super-2 number, since 2×283745280² = 161022767844556800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9784306 + ... + 9784334.

Almost surely, 2^283745280 is an apocalyptic number.

283745280 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 283745280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (588062160).

283745280 is an abundant number, since it is smaller than the sum of its proper divisors (892379040).

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

283745280 is a wasteful number, since it uses less digits than its factorization.

283745280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 283745280 is about 16844.7404254266. The cubic root of 283745280 is about 657.1172711255.

The spelling of 283745280 in words is "two hundred eighty-three million, seven hundred forty-five thousand, two hundred eighty".