281530704 has 80 divisors (see below), whose sum is σ = 895137152. Its totient is φ = 74248704.

The previous prime is 281530703. The next prime is 281530729. The reversal of 281530704 is 407035182.

281530704 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281530703) 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, 27859 + ... + 36594.

Almost surely, 2^281530704 is an apocalyptic number.

281530704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

281530704 is an abundant number, since it is smaller than the sum of its proper divisors (613606448).

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

281530704 is a wasteful number, since it uses less digits than its factorization.

281530704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64484 (or 64478 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 281530704 is about 16778.8767204482. The cubic root of 281530704 is about 655.4032472149.

Adding to 281530704 its reverse (407035182), we get a palindrome (688565886).

The spelling of 281530704 in words is "two hundred eighty-one million, five hundred thirty thousand, seven hundred four".