193393220 has 12 divisors (see below), whose sum is σ = 406125804. Its totient is φ = 77357280.

The previous prime is 193393217. The next prime is 193393247. The reversal of 193393220 is 22393391.

It can be written as a sum of positive squares in 2 ways, for example, as 71334916 + 122058304 = 8446^2 + 11048^2 .

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 3 ways as a sum of consecutive naturals, for example, 4834811 + ... + 4834850.

It is an arithmetic number, because the mean of its divisors is an integer number (33843817).

Almost surely, 2^193393220 is an apocalyptic number.

193393220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

193393220 is an abundant number, since it is smaller than the sum of its proper divisors (212732584).

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

193393220 is a wasteful number, since it uses less digits than its factorization.

193393220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9669670 (or 9669668 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 193393220 is about 13906.5890857536. The cubic root of 193393220 is about 578.2918629906.

The spelling of 193393220 in words is "one hundred ninety-three million, three hundred ninety-three thousand, two hundred twenty".