281056980 has 48 divisors (see below), whose sum is σ = 814101120. Its totient is φ = 72363648.

The previous prime is 281056973. The next prime is 281057003. The reversal of 281056980 is 89650182.

281056980 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 (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79024 + ... + 82503.

It is an arithmetic number, because the mean of its divisors is an integer number (16960440).

Almost surely, 2^281056980 is an apocalyptic number.

281056980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

281056980 is an abundant number, since it is smaller than the sum of its proper divisors (533044140).

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

281056980 is a wasteful number, since it uses less digits than its factorization.

281056980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161568 (or 161566 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 281056980 is about 16764.7540990019. The cubic root of 281056980 is about 655.0354311389.

The spelling of 281056980 in words is "two hundred eighty-one million, fifty-six thousand, nine hundred eighty".