280968996 has 192 divisors, whose sum is σ = 894910464. Its totient is φ = 66355200.

The previous prime is 280968991. The next prime is 280969021. The reversal of 280968996 is 699869082.

It is not an unprimeable number, because it can be changed into a prime (280968991) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 486660 + ... + 487236.

It is an arithmetic number, because the mean of its divisors is an integer number (4660992).

Almost surely, 2^280968996 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 280968996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (447455232).

280968996 is an abundant number, since it is smaller than the sum of its proper divisors (613941468).

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

280968996 is a wasteful number, since it uses less digits than its factorization.

280968996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 57.

The square root of 280968996 is about 16762.1298169415. The cubic root of 280968996 is about 654.9670717475.

The spelling of 280968996 in words is "two hundred eighty million, nine hundred sixty-eight thousand, nine hundred ninety-six".