283278648 has 32 divisors (see below), whose sum is σ = 714821760. Its totient is φ = 93542880.

The previous prime is 283278637. The next prime is 283278659. The reversal of 283278648 is 846872382.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (283278637) and next prime (283278659).

It is a junction number, because it is equal to n+sod(n) for n = 283278597 and 283278606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52588 + ... + 57723.

It is an arithmetic number, because the mean of its divisors is an integer number (22338180).

Almost surely, 2^283278648 is an apocalyptic number.

It is an amenable number.

283278648 is an abundant number, since it is smaller than the sum of its proper divisors (431543112).

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

283278648 is a wasteful number, since it uses less digits than its factorization.

283278648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110427 (or 110423 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The square root of 283278648 is about 16830.8837557628. The cubic root of 283278648 is about 656.7568537466.

The spelling of 283278648 in words is "two hundred eighty-three million, two hundred seventy-eight thousand, six hundred forty-eight".