280434783233280 has 576 divisors, whose sum is σ = 991276513032960. Its totient is φ = 67130200424448.

The previous prime is 280434783233249. The next prime is 280434783233329. The reversal of 280434783233280 is 82332387434082.

280434783233280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 280434783233280.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 491276992 + ... + 491847488.

It is an arithmetic number, because the mean of its divisors is an integer number (1720966168460).

Almost surely, 2^{280434783233280} is an apocalyptic number.

280434783233280 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 280434783233280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495638256516480).

280434783233280 is an abundant number, since it is smaller than the sum of its proper divisors (710841729799680).

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

280434783233280 is a wasteful number, since it uses less digits than its factorization.

280434783233280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570806 (or 570792 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 57.

The spelling of 280434783233280 in words is "two hundred eighty trillion, four hundred thirty-four billion, seven hundred eighty-three million, two hundred thirty-three thousand, two hundred eighty".