281401968 has 40 divisors (see below), whose sum is σ = 737202816. Its totient is φ = 92478400.

The previous prime is 281401961. The next prime is 281402041. The reversal of 281401968 is 869104182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281401961) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 37878 + ... + 44693.

Almost surely, 2^281401968 is an apocalyptic number.

It is an amenable number.

281401968 is an abundant number, since it is smaller than the sum of its proper divisors (455800848).

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

281401968 is a wasteful number, since it uses less digits than its factorization.

281401968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82653 (or 82647 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 281401968 is about 16775.0400297585. The cubic root of 281401968 is about 655.3033328833.

The spelling of 281401968 in words is "two hundred eighty-one million, four hundred one thousand, nine hundred sixty-eight".