280222764 has 96 divisors (see below), whose sum is σ = 725630976. Its totient is φ = 83773440.

The previous prime is 280222757. The next prime is 280222771. The reversal of 280222764 is 467222082.

280222764 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (280222757) and next prime (280222771).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 461349 + ... + 461955.

It is an arithmetic number, because the mean of its divisors is an integer number (7558656).

Almost surely, 2^280222764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280222764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362815488).

280222764 is an abundant number, since it is smaller than the sum of its proper divisors (445408212).

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

280222764 is a wasteful number, since it uses less digits than its factorization.

280222764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735 (or 733 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 280222764 is about 16739.8555549324. The cubic root of 280222764 is about 654.3867102900.

The spelling of 280222764 in words is "two hundred eighty million, two hundred twenty-two thousand, seven hundred sixty-four".