280338490560 has 448 divisors, whose sum is σ = 942914649600. Its totient is φ = 70486425600.

The previous prime is 280338490447. The next prime is 280338490561. The reversal of 280338490560 is 65094833082.

It is a super-2 number, since 2×280338490560² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (280338490561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 141655651 + ... + 141657629.

It is an arithmetic number, because the mean of its divisors is an integer number (2104720200).

Almost surely, 2^280338490560 is an apocalyptic number.

280338490560 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 280338490560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471457324800).

280338490560 is an abundant number, since it is smaller than the sum of its proper divisors (662576159040).

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

280338490560 is a wasteful number, since it uses less digits than its factorization.

280338490560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160 (or 2150 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 280338490560 in words is "two hundred eighty billion, three hundred thirty-eight million, four hundred ninety thousand, five hundred sixty".