280328496 has 40 divisors (see below), whose sum is σ = 827637504. Its totient is φ = 80093760.

The previous prime is 280328483. The next prime is 280328507. The reversal of 280328496 is 694823082.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416820 + ... + 417491.

Almost surely, 2^280328496 is an apocalyptic number.

It is an amenable number.

280328496 is an abundant number, since it is smaller than the sum of its proper divisors (547309008).

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

280328496 is a wasteful number, since it uses less digits than its factorization.

280328496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834329 (or 834323 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 280328496 is about 16743.0133488569. The cubic root of 280328496 is about 654.4690030517.

The spelling of 280328496 in words is "two hundred eighty million, three hundred twenty-eight thousand, four hundred ninety-six".