279828353280 has 432 divisors, whose sum is σ = 1042985208384. Its totient is φ = 63753338880.

The previous prime is 279828353257. The next prime is 279828353293. The reversal of 279828353280 is 82353828972.

It is a self number, because there is not a number n which added to its sum of digits gives 279828353280.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62278714 + ... + 62283206.

It is an arithmetic number, because the mean of its divisors is an integer number (2414317612).

Almost surely, 2^279828353280 is an apocalyptic number.

279828353280 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 279828353280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (521492604192).

279828353280 is an abundant number, since it is smaller than the sum of its proper divisors (763156855104).

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

279828353280 is a wasteful number, since it uses less digits than its factorization.

279828353280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4862 (or 4841 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 279828353280 in words is "two hundred seventy-nine billion, eight hundred twenty-eight million, three hundred fifty-three thousand, two hundred eighty".