993864228 has 24 divisors (see below), whose sum is σ = 2650304832. Its totient is φ = 283961184.

The previous prime is 993864199. The next prime is 993864233. The reversal of 993864228 is 822468399.

993864228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×993864228² = 1975532207396071968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5915775 + ... + 5915942.

It is an arithmetic number, because the mean of its divisors is an integer number (110429368).

Almost surely, 2^993864228 is an apocalyptic number.

It is an amenable number.

993864228 is an abundant number, since it is smaller than the sum of its proper divisors (1656440604).

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

993864228 is a wasteful number, since it uses less digits than its factorization.

993864228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11831731 (or 11831729 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The square root of 993864228 is about 31525.6122541657. The cubic root of 993864228 is about 997.9505452714.

The spelling of 993864228 in words is "nine hundred ninety-three million, eight hundred sixty-four thousand, two hundred twenty-eight".