282978440 has 32 divisors (see below), whose sum is σ = 637200000. Its totient is φ = 113102784.

The previous prime is 282978403. The next prime is 282978463. The reversal of 282978440 is 44879282.

It is a junction number, because it is equal to n+sod(n) for n = 282978391 and 282978400.

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, 78191 + ... + 81729.

It is an arithmetic number, because the mean of its divisors is an integer number (19912500).

Almost surely, 2^282978440 is an apocalyptic number.

282978440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

282978440 is an abundant number, since it is smaller than the sum of its proper divisors (354221560).

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

282978440 is a wasteful number, since it uses less digits than its factorization.

282978440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5549 (or 5545 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 282978440 is about 16821.9630245700. The cubic root of 282978440 is about 656.5247697158.

The spelling of 282978440 in words is "two hundred eighty-two million, nine hundred seventy-eight thousand, four hundred forty".