280245696 has 112 divisors (see below), whose sum is σ = 770924544. Its totient is φ = 89773056.

The previous prime is 280245689. The next prime is 280245709. The reversal of 280245696 is 696542082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 731521 + ... + 731903.

Almost surely, 2^280245696 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 280245696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385462272).

280245696 is an abundant number, since it is smaller than the sum of its proper divisors (490678848).

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

280245696 is a wasteful number, since it uses less digits than its factorization.

280245696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 280245696 is about 16740.5404930665. The cubic root of 280245696 is about 654.4045603586.

The spelling of 280245696 in words is "two hundred eighty million, two hundred forty-five thousand, six hundred ninety-six".