280523088 has 120 divisors (see below), whose sum is σ = 849820608. Its totient is φ = 89413632.

The previous prime is 280523057. The next prime is 280523129. The reversal of 280523088 is 880325082.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87856 + ... + 90992.

Almost surely, 2^280523088 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 280523088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (424910304).

280523088 is an abundant number, since it is smaller than the sum of its proper divisors (569297520).

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

280523088 is a wasteful number, since it uses less digits than its factorization.

280523088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3183 (or 3165 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 280523088 is about 16748.8234810688. The cubic root of 280523088 is about 654.6204027814.

The spelling of 280523088 in words is "two hundred eighty million, five hundred twenty-three thousand, eighty-eight".