280500480 has 216 divisors, whose sum is σ = 1045714488. Its totient is φ = 69009408.

The previous prime is 280500463. The next prime is 280500503. The reversal of 280500480 is 84005082.

280500480 is a `hidden beast` number, since 2 + 80 + 500 + 4 + 80 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9437184 + 271063296 = 3072^2 + 16464^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148824 + ... + 150696.

Almost surely, 2^280500480 is an apocalyptic number.

280500480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280500480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (522857244).

280500480 is an abundant number, since it is smaller than the sum of its proper divisors (765214008).

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

280500480 is a wasteful number, since it uses less digits than its factorization.

280500480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913 (or 1896 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 280500480 is about 16748.1485543925. The cubic root of 280500480 is about 654.6028165217.

The spelling of 280500480 in words is "two hundred eighty million, five hundred thousand, four hundred eighty".