228823820 has 24 divisors (see below), whose sum is σ = 483192528. Its totient is φ = 91022400.

The previous prime is 228823789. The next prime is 228823831. The reversal of 228823820 is 28328822.

It is an unprimeable number.

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, 27986 + ... + 35225.

It is an arithmetic number, because the mean of its divisors is an integer number (20133022).

Almost surely, 2^228823820 is an apocalyptic number.

228823820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228823820 is an abundant number, since it is smaller than the sum of its proper divisors (254368708).

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

228823820 is a wasteful number, since it uses less digits than its factorization.

228823820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63401 (or 63399 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 228823820 is about 15126.9236793209. The cubic root of 228823820 is about 611.6463810742.

The spelling of 228823820 in words is "two hundred twenty-eight million, eight hundred twenty-three thousand, eight hundred twenty".