280881336 has 64 divisors (see below), whose sum is σ = 736704000. Its totient is φ = 89071488.

The previous prime is 280881323. The next prime is 280881343. The reversal of 280881336 is 633188082.

280881336 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 280881294 and 280881303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108570 + ... + 111126.

It is an arithmetic number, because the mean of its divisors is an integer number (11511000).

Almost surely, 2^280881336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280881336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368352000).

280881336 is an abundant number, since it is smaller than the sum of its proper divisors (455822664).

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

280881336 is a wasteful number, since it uses less digits than its factorization.

280881336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2788 (or 2784 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 280881336 is about 16759.5147901125. The cubic root of 280881336 is about 654.8989498951.

The spelling of 280881336 in words is "two hundred eighty million, eight hundred eighty-one thousand, three hundred thirty-six".