280030480 has 20 divisors (see below), whose sum is σ = 651071052. Its totient is φ = 112012160.

The previous prime is 280030469. The next prime is 280030507. The reversal of 280030480 is 84030082.

It can be written as a sum of positive squares in 2 ways, for example, as 216796176 + 63234304 = 14724^2 + 7952^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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 3 ways as a sum of consecutive naturals, for example, 1750111 + ... + 1750270.

Almost surely, 2^280030480 is an apocalyptic number.

280030480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

280030480 is an abundant number, since it is smaller than the sum of its proper divisors (371040572).

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

280030480 is a wasteful number, since it uses less digits than its factorization.

280030480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500394 (or 3500388 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 280030480 is about 16734.1112700974. Note that the first 3 decimals coincide. The cubic root of 280030480 is about 654.2369997719.

The spelling of 280030480 in words is "two hundred eighty million, thirty thousand, four hundred eighty".