280704372 has 48 divisors (see below), whose sum is σ = 708610560. Its totient is φ = 85972608.

The previous prime is 280704367. The next prime is 280704379. The reversal of 280704372 is 273407082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280704379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30754 + ... + 38822.

It is an arithmetic number, because the mean of its divisors is an integer number (14762720).

Almost surely, 2^280704372 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 280704372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354305280).

280704372 is an abundant number, since it is smaller than the sum of its proper divisors (427906188).

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

280704372 is a wasteful number, since it uses less digits than its factorization.

280704372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8312 (or 8310 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 280704372 is about 16754.2344498339. The cubic root of 280704372 is about 654.7613854146.

The spelling of 280704372 in words is "two hundred eighty million, seven hundred four thousand, three hundred seventy-two".