281494880 has 192 divisors, whose sum is σ = 754790400. Its totient is φ = 98703360.

The previous prime is 281494867. The next prime is 281494883. The reversal of 281494880 is 88494182.

It is a happy number.

281494880 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281494883) 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 31 ways as a sum of consecutive naturals, for example, 2732909 + ... + 2733011.

It is an arithmetic number, because the mean of its divisors is an integer number (3931200).

Almost surely, 2^281494880 is an apocalyptic number.

281494880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281494880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377395200).

281494880 is an abundant number, since it is smaller than the sum of its proper divisors (473295520).

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

281494880 is a wasteful number, since it uses less digits than its factorization.

281494880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 44.

The square root of 281494880 is about 16777.8091537602. The cubic root of 281494880 is about 655.3754466215.

The spelling of 281494880 in words is "two hundred eighty-one million, four hundred ninety-four thousand, eight hundred eighty".