281310048 has 144 divisors (see below), whose sum is σ = 852087600. Its totient is φ = 87782400.

The previous prime is 281310047. The next prime is 281310077. The reversal of 281310048 is 840013182.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281310041) by changing a digit.

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, 552418 + ... + 552926.

It is an arithmetic number, because the mean of its divisors is an integer number (5917275).

Almost surely, 2^281310048 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 281310048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (426043800).

281310048 is an abundant number, since it is smaller than the sum of its proper divisors (570777552).

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

281310048 is a wasteful number, since it uses less digits than its factorization.

281310048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 281310048 is about 16772.3000211659. The cubic root of 281310048 is about 655.2319734651.

The spelling of 281310048 in words is "two hundred eighty-one million, three hundred ten thousand, forty-eight".