283239240 has 64 divisors (see below), whose sum is σ = 851376960. Its totient is φ = 75383040.

The previous prime is 283239239. The next prime is 283239241. The reversal of 283239240 is 42932382.

It is an interprime number because it is at equal distance from previous prime (283239239) and next prime (283239241).

It is not an unprimeable number, because it can be changed into a prime (283239241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68430 + ... + 72450.

It is an arithmetic number, because the mean of its divisors is an integer number (13302765).

Almost surely, 2^283239240 is an apocalyptic number.

283239240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

283239240 is an abundant number, since it is smaller than the sum of its proper divisors (568137720).

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

283239240 is a wasteful number, since it uses less digits than its factorization.

283239240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4622 (or 4618 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 283239240 is about 16829.7130100308. The cubic root of 283239240 is about 656.7263976633.

The spelling of 283239240 in words is "two hundred eighty-three million, two hundred thirty-nine thousand, two hundred forty".