283969840 has 80 divisors (see below), whose sum is σ = 823161600. Its totient is φ = 88508160.

The previous prime is 283969831. The next prime is 283969843. The reversal of 283969840 is 48969382.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (283969843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16890 + ... + 29209.

It is an arithmetic number, because the mean of its divisors is an integer number (10289520).

Almost surely, 2^283969840 is an apocalyptic number.

283969840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

283969840 is an abundant number, since it is smaller than the sum of its proper divisors (539191760).

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

283969840 is a wasteful number, since it uses less digits than its factorization.

283969840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46130 (or 46124 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 49.

The square root of 283969840 is about 16851.4046892240. The cubic root of 283969840 is about 657.2905760276.

The spelling of 283969840 in words is "two hundred eighty-three million, nine hundred sixty-nine thousand, eight hundred forty".