280822080 has 448 divisors, whose sum is σ = 1158727680. Its totient is φ = 55910400.

The previous prime is 280822067. The next prime is 280822103. The reversal of 280822080 is 80228082.

It is a tau number, because it is divible by the number of its divisors (448).

It is a super-2 number, since 2×280822080² = 157722081231052800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2143615 + ... + 2143745.

Almost surely, 2^280822080 is an apocalyptic number.

280822080 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 280822080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (579363840).

280822080 is an abundant number, since it is smaller than the sum of its proper divisors (877905600).

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

280822080 is a wasteful number, since it uses less digits than its factorization.

280822080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 280822080 is about 16757.7468652561. The cubic root of 280822080 is about 654.8528931723.

The spelling of 280822080 in words is "two hundred eighty million, eight hundred twenty-two thousand, eighty".