280822340 has 12 divisors (see below), whose sum is σ = 589726956. Its totient is φ = 112328928.

The previous prime is 280822307. The next prime is 280822343. The reversal of 280822340 is 43228082.

280822340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 33200644 + 247621696 = 5762^2 + 15736^2 .

It is a super-2 number, since 2×280822340² = 157722373286151200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (280822343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7020539 + ... + 7020578.

It is an arithmetic number, because the mean of its divisors is an integer number (49143913).

Almost surely, 2^280822340 is an apocalyptic number.

280822340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

280822340 is an abundant number, since it is smaller than the sum of its proper divisors (308904616).

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

280822340 is a wasteful number, since it uses less digits than its factorization.

280822340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14041126 (or 14041124 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 280822340 is about 16757.7546228604. The cubic root of 280822340 is about 654.8530952715.

The spelling of 280822340 in words is "two hundred eighty million, eight hundred twenty-two thousand, three hundred forty".