283963220 has 12 divisors (see below), whose sum is σ = 596322804. Its totient is φ = 113585280.

The previous prime is 283963213. The next prime is 283963259. The reversal of 283963220 is 22369382.

It can be written as a sum of positive squares in 2 ways, for example, as 199543876 + 84419344 = 14126^2 + 9188^2 .

It is a super-2 number, since 2×283963220² = 161270220625536800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7099061 + ... + 7099100.

It is an arithmetic number, because the mean of its divisors is an integer number (49693567).

Almost surely, 2^283963220 is an apocalyptic number.

283963220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

283963220 is an abundant number, since it is smaller than the sum of its proper divisors (312359584).

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

283963220 is a wasteful number, since it uses less digits than its factorization.

283963220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14198170 (or 14198168 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 283963220 is about 16851.2082652847. The cubic root of 283963220 is about 657.2854683286.

The spelling of 283963220 in words is "two hundred eighty-three million, nine hundred sixty-three thousand, two hundred twenty".