281488 has 20 divisors (see below), whose sum is σ = 555148. Its totient is φ = 138240.

The previous prime is 281431. The next prime is 281509. The reversal of 281488 is 884182.

It can be written as a sum of positive squares in 2 ways, for example, as 186624 + 94864 = 432^2 + 308^2 .

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1048 + ... + 1288.

2²⁸¹⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

281488 is a deficient number, since it is larger than the sum of its proper divisors (273660).

281488 is a wasteful number, since it uses less digits than its factorization.

281488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 316 counting only the distinct ones).

The product of its digits is 4096, while the sum is 31.

The square root of 281488 is about 530.5544269912. The cubic root of 281488 is about 65.5370107247.

The spelling of 281488 in words is "two hundred eighty-one thousand, four hundred eighty-eight".