283228640 has 48 divisors (see below), whose sum is σ = 670411728. Its totient is φ = 113074176.

The previous prime is 283228639. The next prime is 283228643. The reversal of 283228640 is 46822382.

It is a self number, because there is not a number n which added to its sum of digits gives 283228640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (283228643) by changing a digit.

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, 101504 + ... + 104256.

It is an arithmetic number, because the mean of its divisors is an integer number (13966911).

Almost surely, 2^283228640 is an apocalyptic number.

283228640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

283228640 is an abundant number, since it is smaller than the sum of its proper divisors (387183088).

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

283228640 is a wasteful number, since it uses less digits than its factorization.

283228640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411 (or 3403 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 283228640 is about 16829.3980878699. The cubic root of 283228640 is about 656.7182050759.

The spelling of 283228640 in words is "two hundred eighty-three million, two hundred twenty-eight thousand, six hundred forty".