280493107456 has 81 divisors (see below), whose sum is σ = 568424085411. Its totient is φ = 138140800512.

The previous prime is 280493107441. The next prime is 280493107481. The reversal of 280493107456 is 654701394082.

It is a happy number.

The square root of 280493107456 is 529616.

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

280493107456 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 669434415 + ... + 669434833.

It is a 1-persistent number, because it is pandigital, but 2⋅280493107456 = 560986214912 is not.

Almost surely, 2^280493107456 is an apocalyptic number.

280493107456 is the 529616-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280493107456

280493107456 is an abundant number, since it is smaller than the sum of its proper divisors (287930977955).

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

280493107456 is an frugal number, since it uses more digits than its factorization.

280493107456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

Multiplying 280493107456 by its sum of digits (49), we get a square (13744162265344 = 3707312²).

The spelling of 280493107456 in words is "two hundred eighty billion, four hundred ninety-three million, one hundred seven thousand, four hundred fifty-six".