280533252 has 96 divisors (see below), whose sum is σ = 735799680. Its totient is φ = 82667520.

The previous prime is 280533217. The next prime is 280533263. The reversal of 280533252 is 252335082.

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, 608302 + ... + 608762.

It is an arithmetic number, because the mean of its divisors is an integer number (7664580).

Almost surely, 2^280533252 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 280533252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367899840).

280533252 is an abundant number, since it is smaller than the sum of its proper divisors (455266428).

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

280533252 is a wasteful number, since it uses less digits than its factorization.

280533252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 280533252 is about 16749.1269026179. The cubic root of 280533252 is about 654.6283088228.

The spelling of 280533252 in words is "two hundred eighty million, five hundred thirty-three thousand, two hundred fifty-two".