281996948 has 12 divisors (see below), whose sum is σ = 500445792. Its totient is φ = 139012440.

The previous prime is 281996947. The next prime is 281996959. The reversal of 281996948 is 849699182.

It is a junction number, because it is equal to n+sod(n) for n = 281996893 and 281996902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281996947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496190 + ... + 496757.

It is an arithmetic number, because the mean of its divisors is an integer number (41703816).

Almost surely, 2^281996948 is an apocalyptic number.

It is an amenable number.

281996948 is a deficient number, since it is larger than the sum of its proper divisors (218448844).

281996948 is a wasteful number, since it uses less digits than its factorization.

281996948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993022 (or 993020 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 56.

The square root of 281996948 is about 16792.7647515232. The cubic root of 281996948 is about 655.7648528856.

The spelling of 281996948 in words is "two hundred eighty-one million, nine hundred ninety-six thousand, nine hundred forty-eight".