283911820 has 12 divisors (see below), whose sum is σ = 596214864. Its totient is φ = 113564720.

The previous prime is 283911791. The next prime is 283911821. The reversal of 283911820 is 28119382.

283911820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (283911821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7097776 + ... + 7097815.

It is an arithmetic number, because the mean of its divisors is an integer number (49684572).

Almost surely, 2^283911820 is an apocalyptic number.

283911820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

283911820 is an abundant number, since it is smaller than the sum of its proper divisors (312303044).

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

283911820 is a wasteful number, since it uses less digits than its factorization.

283911820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14195600 (or 14195598 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 283911820 is about 16849.6830830731. The cubic root of 283911820 is about 657.2458076621.

The spelling of 283911820 in words is "two hundred eighty-three million, nine hundred eleven thousand, eight hundred twenty".