283500020 has 12 divisors (see below), whose sum is σ = 595350084. Its totient is φ = 113400000.

The previous prime is 283500013. The next prime is 283500023. The reversal of 283500020 is 20005382.

It can be written as a sum of positive squares in 2 ways, for example, as 53553124 + 229946896 = 7318^2 + 15164^2 .

It is a super-2 number, since 2×283500020² = 160744522680000800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 14175001 = 283500020 / (2 + 8 + 3 + 5 + 0 + 0 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 283499965 and 283500001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (283500023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7087481 + ... + 7087520.

It is an arithmetic number, because the mean of its divisors is an integer number (49612507).

Almost surely, 2^283500020 is an apocalyptic number.

283500020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

283500020 is an abundant number, since it is smaller than the sum of its proper divisors (311850064).

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

283500020 is a wasteful number, since it uses less digits than its factorization.

283500020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14175010 (or 14175008 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 283500020 is about 16837.4588343966. The cubic root of 283500020 is about 656.9278864312.

The spelling of 283500020 in words is "two hundred eighty-three million, five hundred thousand, twenty".