280461480 has 256 divisors, whose sum is σ = 960664320. Its totient is φ = 65028096.

The previous prime is 280461479. The next prime is 280461497. The reversal of 280461480 is 84164082.

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 63 ways as a sum of consecutive naturals, for example, 2481904 + ... + 2482016.

It is an arithmetic number, because the mean of its divisors is an integer number (3752595).

Almost surely, 2^280461480 is an apocalyptic number.

280461480 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 280461480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480332160).

280461480 is an abundant number, since it is smaller than the sum of its proper divisors (680202840).

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

280461480 is a wasteful number, since it uses less digits than its factorization.

280461480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 280461480 is about 16746.9842061190. The cubic root of 280461480 is about 654.5724770690.

The spelling of 280461480 in words is "two hundred eighty million, four hundred sixty-one thousand, four hundred eighty".