281080128 has 112 divisors (see below), whose sum is σ = 854090240. Its totient is φ = 79916544.

The previous prime is 281080117. The next prime is 281080141. The reversal of 281080128 is 821080182.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 281080095 and 281080104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379983 + ... + 380721.

Almost surely, 2^281080128 is an apocalyptic number.

281080128 is a gapful number since it is divisible by the number (28) 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 281080128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427045120).

281080128 is an abundant number, since it is smaller than the sum of its proper divisors (573010112).

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

281080128 is a wasteful number, since it uses less digits than its factorization.

281080128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044 (or 1034 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 281080128 is about 16765.4444617493. Note that the first 4 decimals coincide. The cubic root of 281080128 is about 655.0534136656.

The spelling of 281080128 in words is "two hundred eighty-one million, eighty thousand, one hundred twenty-eight".