281106140 has 144 divisors (see below), whose sum is σ = 747694080. Its totient is φ = 88179840.

The previous prime is 281106073. The next prime is 281106151. The reversal of 281106140 is 41601182.

281106140 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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 576977 + ... + 577463.

It is an arithmetic number, because the mean of its divisors is an integer number (5192320).

Almost surely, 2^281106140 is an apocalyptic number.

281106140 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 281106140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373847040).

281106140 is an abundant number, since it is smaller than the sum of its proper divisors (466587940).

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

281106140 is a wasteful number, since it uses less digits than its factorization.

281106140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 281106140 is about 16766.2202061168. The cubic root of 281106140 is about 655.0736199130.

The spelling of 281106140 in words is "two hundred eighty-one million, one hundred six thousand, one hundred forty".