280925652 has 96 divisors (see below), whose sum is σ = 772934400. Its totient is φ = 77755392.

The previous prime is 280925647. The next prime is 280925699. The reversal of 280925652 is 256529082.

It is a self number, because there is not a number n which added to its sum of digits gives 280925652.

It is a congruent number.

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, 395874 + ... + 396582.

It is an arithmetic number, because the mean of its divisors is an integer number (8051400).

Almost surely, 2^280925652 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 280925652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386467200).

280925652 is an abundant number, since it is smaller than the sum of its proper divisors (492008748).

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

280925652 is a wasteful number, since it uses less digits than its factorization.

280925652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 280925652 is about 16760.8368526157. The cubic root of 280925652 is about 654.9333902701.

The spelling of 280925652 in words is "two hundred eighty million, nine hundred twenty-five thousand, six hundred fifty-two".