280730425600 has 243 divisors, whose sum is σ = 718150895427. Its totient is φ = 108646871040.

The previous prime is 280730425597. The next prime is 280730425609. The reversal of 280730425600 is 6524037082.

The square root of 280730425600 is 529840.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 26649909504 + 254080516096 = 163248^2 + 504064^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 280730425600.

It is not an unprimeable number, because it can be changed into a prime (280730425609) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1568326311 + ... + 1568326489.

Almost surely, 2^280730425600 is an apocalyptic number.

280730425600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

280730425600 is the 529840-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280730425600

280730425600 is an abundant number, since it is smaller than the sum of its proper divisors (437420469827).

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

280730425600 is an frugal number, since it uses more digits than its factorization.

280730425600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 280730425600 in words is "two hundred eighty billion, seven hundred thirty million, four hundred twenty-five thousand, six hundred".