281648332 has 24 divisors (see below), whose sum is σ = 569630880. Its totient is φ = 119349120.

The previous prime is 281648309. The next prime is 281648347. The reversal of 281648332 is 233846182.

It is a super-3 number, since 3×281648332³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 281648291 and 281648300.

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 7 ways as a sum of consecutive naturals, for example, 54019 + ... + 59002.

It is an arithmetic number, because the mean of its divisors is an integer number (23734620).

Almost surely, 2^281648332 is an apocalyptic number.

It is an amenable number.

281648332 is an abundant number, since it is smaller than the sum of its proper divisors (287982548).

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

281648332 is a wasteful number, since it uses less digits than its factorization.

281648332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113121 (or 113119 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 281648332 is about 16782.3815949942. The cubic root of 281648332 is about 655.4945138009.

The spelling of 281648332 in words is "two hundred eighty-one million, six hundred forty-eight thousand, three hundred thirty-two".