280413760 has 224 divisors, whose sum is σ = 783457920. Its totient is φ = 94617600.

The previous prime is 280413751. The next prime is 280413773. The reversal of 280413760 is 67314082.

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 31 ways as a sum of consecutive naturals, for example, 4185247 + ... + 4185313.

It is an arithmetic number, because the mean of its divisors is an integer number (3497580).

Almost surely, 2^280413760 is an apocalyptic number.

280413760 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 280413760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391728960).

280413760 is an abundant number, since it is smaller than the sum of its proper divisors (503044160).

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

280413760 is a wasteful number, since it uses less digits than its factorization.

280413760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 280413760 is about 16745.5594113783. The cubic root of 280413760 is about 654.5353501994.

The spelling of 280413760 in words is "two hundred eighty million, four hundred thirteen thousand, seven hundred sixty".