280285152 has 96 divisors (see below), whose sum is σ = 843462144. Its totient is φ = 79833600.

The previous prime is 280285151. The next prime is 280285157. The reversal of 280285152 is 251582082.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280285151) 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, 423702 + ... + 424362.

It is an arithmetic number, because the mean of its divisors is an integer number (8786064).

Almost surely, 2^280285152 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 280285152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421731072).

280285152 is an abundant number, since it is smaller than the sum of its proper divisors (563176992).

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

280285152 is a wasteful number, since it uses less digits than its factorization.

280285152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312 (or 1304 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 280285152 is about 16741.7189081647. The cubic root of 280285152 is about 654.4352702857.

The spelling of 280285152 in words is "two hundred eighty million, two hundred eighty-five thousand, one hundred fifty-two".