199233220 has 24 divisors (see below), whose sum is σ = 418762008. Its totient is φ = 79622400.

The previous prime is 199233193. The next prime is 199233257. The reversal of 199233220 is 22332991.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24147396 + 175085824 = 4914^2 + 13232^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

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, 22650 + ... + 30190.

It is an arithmetic number, because the mean of its divisors is an integer number (17448417).

Almost surely, 2^199233220 is an apocalyptic number.

199233220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199233220 is an abundant number, since it is smaller than the sum of its proper divisors (219528788).

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

199233220 is a wasteful number, since it uses less digits than its factorization.

199233220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8871 (or 8869 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 199233220 is about 14114.9998228835. Note that the first 3 decimals coincide. The cubic root of 199233220 is about 584.0552310622.

The spelling of 199233220 in words is "one hundred ninety-nine million, two hundred thirty-three thousand, two hundred twenty".